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Finding the Fourth Proportional to 131,353.52, 181,272.20 and 71,737.52

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Solution

The fourth proportional to 131,353.52, 181,272.20 and 71,737.52 is: 99,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,353.52 : 181,272.20 = 71,737.52 : x
  2. Step 2: Convert to fraction form
    131,353.52/181,272.20 = 71,737.52/x
  3. Step 3: Cross multiply
    131,353.52x = 181,272.20 × 71,737.52
  4. Step 4: Simplify right side
    131,353.52x = 13,004,018,072.94
  5. Step 5: Solve for x
    x = 13,004,018,072.94/131,353.52
  6. Step 6: Final answer
    x = 99,000.15

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1.5x scale

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.