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Finding the Fourth Proportional to 123,939, 185,937.66 and 40,833

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Solution

The fourth proportional to 123,939, 185,937.66 and 40,833 is: 61,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,939 : 185,937.66 = 40,833 : x
  2. Step 2: Convert to fraction form
    123,939/185,937.66 = 40,833/x
  3. Step 3: Cross multiply
    123,939x = 185,937.66 × 40,833
  4. Step 4: Simplify right side
    123,939x = 7,592,392,470.78
  5. Step 5: Solve for x
    x = 7,592,392,470.78/123,939
  6. Step 6: Final answer
    x = 61,259.11

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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.