Home / 128,454.25-177,260.76-70,309.70

Finding the Fourth Proportional to 128,454.25, 177,260.76 and 70,309.70

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Solution

The fourth proportional to 128,454.25, 177,260.76 and 70,309.70 is: 97,024.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,454.25 : 177,260.76 = 70,309.70 : x
  2. Step 2: Convert to fraction form
    128,454.25/177,260.76 = 70,309.70/x
  3. Step 3: Cross multiply
    128,454.25x = 177,260.76 × 70,309.70
  4. Step 4: Simplify right side
    128,454.25x = 12,463,151,632.89
  5. Step 5: Solve for x
    x = 12,463,151,632.89/128,454.25
  6. Step 6: Final answer
    x = 97,024.05

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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.