Home / 102,398.20-141,310.15-57,079.06

Finding the Fourth Proportional to 102,398.20, 141,310.15 and 57,079.06

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Solution

The fourth proportional to 102,398.20, 141,310.15 and 57,079.06 is: 78,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,398.20 : 141,310.15 = 57,079.06 : x
  2. Step 2: Convert to fraction form
    102,398.20/141,310.15 = 57,079.06/x
  3. Step 3: Cross multiply
    102,398.20x = 141,310.15 × 57,079.06
  4. Step 4: Simplify right side
    102,398.20x = 8,065,850,034.49
  5. Step 5: Solve for x
    x = 8,065,850,034.49/102,398.20
  6. Step 6: Final answer
    x = 78,769.45

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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.