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Finding the Fourth Proportional to 123,917.61, 185,860.62 and 39,686.52

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Solution

The fourth proportional to 123,917.61, 185,860.62 and 39,686.52 is: 59,524.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,917.61 : 185,860.62 = 39,686.52 : x
  2. Step 2: Convert to fraction form
    123,917.61/185,860.62 = 39,686.52/x
  3. Step 3: Cross multiply
    123,917.61x = 185,860.62 × 39,686.52
  4. Step 4: Simplify right side
    123,917.61x = 7,376,161,212.84
  5. Step 5: Solve for x
    x = 7,376,161,212.84/123,917.61
  6. Step 6: Final answer
    x = 59,524.72

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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.