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Finding the Fourth Proportional to 181,472.31, 272,031.08 and 81,657.63

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Solution

The fourth proportional to 181,472.31, 272,031.08 and 81,657.63 is: 122,406.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,472.31 : 272,031.08 = 81,657.63 : x
  2. Step 2: Convert to fraction form
    181,472.31/272,031.08 = 81,657.63/x
  3. Step 3: Cross multiply
    181,472.31x = 272,031.08 × 81,657.63
  4. Step 4: Simplify right side
    181,472.31x = 22,213,412,870.85
  5. Step 5: Solve for x
    x = 22,213,412,870.85/181,472.31
  6. Step 6: Final answer
    x = 122,406.62

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1.5x scale

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.