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Finding the Fourth Proportional to 101,778.17, 140,470.68 and 56,470.73

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Solution

The fourth proportional to 101,778.17, 140,470.68 and 56,470.73 is: 77,938.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,778.17 : 140,470.68 = 56,470.73 : x
  2. Step 2: Convert to fraction form
    101,778.17/140,470.68 = 56,470.73/x
  3. Step 3: Cross multiply
    101,778.17x = 140,470.68 × 56,470.73
  4. Step 4: Simplify right side
    101,778.17x = 7,932,481,140.84
  5. Step 5: Solve for x
    x = 7,932,481,140.84/101,778.17
  6. Step 6: Final answer
    x = 77,938.93

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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.