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Finding the Fourth Proportional to 123,789.65, 185,684.48 and 67,599.11

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Solution

The fourth proportional to 123,789.65, 185,684.48 and 67,599.11 is: 101,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,789.65 : 185,684.48 = 67,599.11 : x
  2. Step 2: Convert to fraction form
    123,789.65/185,684.48 = 67,599.11/x
  3. Step 3: Cross multiply
    123,789.65x = 185,684.48 × 67,599.11
  4. Step 4: Simplify right side
    123,789.65x = 12,552,105,272.21
  5. Step 5: Solve for x
    x = 12,552,105,272.21/123,789.65
  6. Step 6: Final answer
    x = 101,398.66

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1.5x scale

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.