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Finding the Fourth Proportional to 131,699.97, 181,747.24 and 71,271.87

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Solution

The fourth proportional to 131,699.97, 181,747.24 and 71,271.87 is: 98,355.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,699.97 : 181,747.24 = 71,271.87 : x
  2. Step 2: Convert to fraction form
    131,699.97/181,747.24 = 71,271.87/x
  3. Step 3: Cross multiply
    131,699.97x = 181,747.24 × 71,271.87
  4. Step 4: Simplify right side
    131,699.97x = 12,953,464,397.04
  5. Step 5: Solve for x
    x = 12,953,464,397.04/131,699.97
  6. Step 6: Final answer
    x = 98,355.87

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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.