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Finding the Fourth Proportional to 124,992, 187,507.55 and 40,732.61

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Solution

The fourth proportional to 124,992, 187,507.55 and 40,732.61 is: 61,105.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,992 : 187,507.55 = 40,732.61 : x
  2. Step 2: Convert to fraction form
    124,992/187,507.55 = 40,732.61/x
  3. Step 3: Cross multiply
    124,992x = 187,507.55 × 40,732.61
  4. Step 4: Simplify right side
    124,992x = 7,637,671,070.50
  5. Step 5: Solve for x
    x = 7,637,671,070.50/124,992
  6. Step 6: Final answer
    x = 61,105.28

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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.