Home / 102,386.76-141,305.20-57,068.88

Finding the Fourth Proportional to 102,386.76, 141,305.20 and 57,068.88

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Solution

The fourth proportional to 102,386.76, 141,305.20 and 57,068.88 is: 78,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,386.76 : 141,305.20 = 57,068.88 : x
  2. Step 2: Convert to fraction form
    102,386.76/141,305.20 = 57,068.88/x
  3. Step 3: Cross multiply
    102,386.76x = 141,305.20 × 57,068.88
  4. Step 4: Simplify right side
    102,386.76x = 8,064,129,502.18
  5. Step 5: Solve for x
    x = 8,064,129,502.18/102,386.76
  6. Step 6: Final answer
    x = 78,761.45

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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.