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Finding the Fourth Proportional to 101,337.71, 139,841.21 and 55,399.73

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Solution

The fourth proportional to 101,337.71, 139,841.21 and 55,399.73 is: 76,448.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,337.71 : 139,841.21 = 55,399.73 : x
  2. Step 2: Convert to fraction form
    101,337.71/139,841.21 = 55,399.73/x
  3. Step 3: Cross multiply
    101,337.71x = 139,841.21 × 55,399.73
  4. Step 4: Simplify right side
    101,337.71x = 7,747,165,276.87
  5. Step 5: Solve for x
    x = 7,747,165,276.87/101,337.71
  6. Step 6: Final answer
    x = 76,448.99

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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.