Home / 102,389.87-141,292.96-57,071.59

Finding the Fourth Proportional to 102,389.87, 141,292.96 and 57,071.59

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Solution

The fourth proportional to 102,389.87, 141,292.96 and 57,071.59 is: 78,755.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,389.87 : 141,292.96 = 57,071.59 : x
  2. Step 2: Convert to fraction form
    102,389.87/141,292.96 = 57,071.59/x
  3. Step 3: Cross multiply
    102,389.87x = 141,292.96 × 57,071.59
  4. Step 4: Simplify right side
    102,389.87x = 8,063,813,387.10
  5. Step 5: Solve for x
    x = 8,063,813,387.10/102,389.87
  6. Step 6: Final answer
    x = 78,755.97

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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.