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Finding the Fourth Proportional to 181,603.80, 272,347.08 and 66,181.86

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Solution

The fourth proportional to 181,603.80, 272,347.08 and 66,181.86 is: 99,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,603.80 : 272,347.08 = 66,181.86 : x
  2. Step 2: Convert to fraction form
    181,603.80/272,347.08 = 66,181.86/x
  3. Step 3: Cross multiply
    181,603.80x = 272,347.08 × 66,181.86
  4. Step 4: Simplify right side
    181,603.80x = 18,024,436,319.97
  5. Step 5: Solve for x
    x = 18,024,436,319.97/181,603.80
  6. Step 6: Final answer
    x = 99,251.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.