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Finding the Fourth Proportional to 123,613.70, 185,339.55 and 48,688.70

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Solution

The fourth proportional to 123,613.70, 185,339.55 and 48,688.70 is: 73,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,613.70 : 185,339.55 = 48,688.70 : x
  2. Step 2: Convert to fraction form
    123,613.70/185,339.55 = 48,688.70/x
  3. Step 3: Cross multiply
    123,613.70x = 185,339.55 × 48,688.70
  4. Step 4: Simplify right side
    123,613.70x = 9,023,941,748.09
  5. Step 5: Solve for x
    x = 9,023,941,748.09/123,613.70
  6. Step 6: Final answer
    x = 73,001.15

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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.