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Finding the Fourth Proportional to 181,487.79, 272,148.39 and 106,643.12

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Solution

The fourth proportional to 181,487.79, 272,148.39 and 106,643.12 is: 159,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,487.79 : 272,148.39 = 106,643.12 : x
  2. Step 2: Convert to fraction form
    181,487.79/272,148.39 = 106,643.12/x
  3. Step 3: Cross multiply
    181,487.79x = 272,148.39 × 106,643.12
  4. Step 4: Simplify right side
    181,487.79x = 29,022,752,051.83
  5. Step 5: Solve for x
    x = 29,022,752,051.83/181,487.79
  6. Step 6: Final answer
    x = 159,915.73

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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.