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Finding the Fourth Proportional to 131,604.50, 181,614.22 and 71,988.50

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Solution

The fourth proportional to 131,604.50, 181,614.22 and 71,988.50 is: 99,344.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,604.50 : 181,614.22 = 71,988.50 : x
  2. Step 2: Convert to fraction form
    131,604.50/181,614.22 = 71,988.50/x
  3. Step 3: Cross multiply
    131,604.50x = 181,614.22 × 71,988.50
  4. Step 4: Simplify right side
    131,604.50x = 13,074,135,276.47
  5. Step 5: Solve for x
    x = 13,074,135,276.47/131,604.50
  6. Step 6: Final answer
    x = 99,344.14

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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.