Home / 128,505,420,746.56-177,150,578,392.92-89,804,184,590.80

Finding the Fourth Proportional to 128,505,420,746.56, 177,150,578,392.92 and 89,804,184,590.80

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Solution

The fourth proportional to 128,505,420,746.56, 177,150,578,392.92 and 89,804,184,590.80 is: 123,799,160,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,505,420,746.56 : 177,150,578,392.92 = 89,804,184,590.80 : x
  2. Step 2: Convert to fraction form
    128,505,420,746.56/177,150,578,392.92 = 89,804,184,590.80/x
  3. Step 3: Cross multiply
    128,505,420,746.56x = 177,150,578,392.92 × 89,804,184,590.80
  4. Step 4: Simplify right side
    128,505,420,746.56x = 15,908,863,242,364,776,349,696
  5. Step 5: Solve for x
    x = 15,908,863,242,364,776,349,696/128,505,420,746.56
  6. Step 6: Final answer
    x = 123,799,160,766.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.