Home / 128,331.29-177,094.10-74,634.97

Finding the Fourth Proportional to 128,331.29, 177,094.10 and 74,634.97

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Solution

The fourth proportional to 128,331.29, 177,094.10 and 74,634.97 is: 102,994.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,331.29 : 177,094.10 = 74,634.97 : x
  2. Step 2: Convert to fraction form
    128,331.29/177,094.10 = 74,634.97/x
  3. Step 3: Cross multiply
    128,331.29x = 177,094.10 × 74,634.97
  4. Step 4: Simplify right side
    128,331.29x = 13,217,413,470.00
  5. Step 5: Solve for x
    x = 13,217,413,470.00/128,331.29
  6. Step 6: Final answer
    x = 102,994.47

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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.