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Finding the Fourth Proportional to 131,800.88, 181,887.72 and 72,184.88

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Solution

The fourth proportional to 131,800.88, 181,887.72 and 72,184.88 is: 99,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,800.88 : 181,887.72 = 72,184.88 : x
  2. Step 2: Convert to fraction form
    131,800.88/181,887.72 = 72,184.88/x
  3. Step 3: Cross multiply
    131,800.88x = 181,887.72 × 72,184.88
  4. Step 4: Simplify right side
    131,800.88x = 13,129,543,241.67
  5. Step 5: Solve for x
    x = 13,129,543,241.67/131,800.88
  6. Step 6: Final answer
    x = 99,616.51

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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.