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Finding the Fourth Proportional to 131,071.68, 180,877.20 and 73,710.98

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Solution

The fourth proportional to 131,071.68, 180,877.20 and 73,710.98 is: 101,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,071.68 : 180,877.20 = 73,710.98 : x
  2. Step 2: Convert to fraction form
    131,071.68/180,877.20 = 73,710.98/x
  3. Step 3: Cross multiply
    131,071.68x = 180,877.20 × 73,710.98
  4. Step 4: Simplify right side
    131,071.68x = 13,332,635,847.43
  5. Step 5: Solve for x
    x = 13,332,635,847.43/131,071.68
  6. Step 6: Final answer
    x = 101,720.19

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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.