Home / 128,279.45-177,081.84-98,066.04

Finding the Fourth Proportional to 128,279.45, 177,081.84 and 98,066.04

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Solution

The fourth proportional to 128,279.45, 177,081.84 and 98,066.04 is: 135,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,279.45 : 177,081.84 = 98,066.04 : x
  2. Step 2: Convert to fraction form
    128,279.45/177,081.84 = 98,066.04/x
  3. Step 3: Cross multiply
    128,279.45x = 177,081.84 × 98,066.04
  4. Step 4: Simplify right side
    128,279.45x = 17,365,714,804.71
  5. Step 5: Solve for x
    x = 17,365,714,804.71/128,279.45
  6. Step 6: Final answer
    x = 135,374.10

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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.