Home / 102,016.91-140,780.51-56,693.73

Finding the Fourth Proportional to 102,016.91, 140,780.51 and 56,693.73

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Solution

The fourth proportional to 102,016.91, 140,780.51 and 56,693.73 is: 78,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,016.91 : 140,780.51 = 56,693.73 : x
  2. Step 2: Convert to fraction form
    102,016.91/140,780.51 = 56,693.73/x
  3. Step 3: Cross multiply
    102,016.91x = 140,780.51 × 56,693.73
  4. Step 4: Simplify right side
    102,016.91x = 7,981,372,223.20
  5. Step 5: Solve for x
    x = 7,981,372,223.20/102,016.91
  6. Step 6: Final answer
    x = 78,235.78

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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.