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Finding the Fourth Proportional to 180,218.67, 248,691.72 and 99,641.49

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Solution

The fourth proportional to 180,218.67, 248,691.72 and 99,641.49 is: 137,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,218.67 : 248,691.72 = 99,641.49 : x
  2. Step 2: Convert to fraction form
    180,218.67/248,691.72 = 99,641.49/x
  3. Step 3: Cross multiply
    180,218.67x = 248,691.72 × 99,641.49
  4. Step 4: Simplify right side
    180,218.67x = 24,780,013,531.46
  5. Step 5: Solve for x
    x = 24,780,013,531.46/180,218.67
  6. Step 6: Final answer
    x = 137,499.70

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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.