Home / 123,845.90-185,710.28-47,979.96

Finding the Fourth Proportional to 123,845.90, 185,710.28 and 47,979.96

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Solution

The fourth proportional to 123,845.90, 185,710.28 and 47,979.96 is: 71,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,845.90 : 185,710.28 = 47,979.96 : x
  2. Step 2: Convert to fraction form
    123,845.90/185,710.28 = 47,979.96/x
  3. Step 3: Cross multiply
    123,845.90x = 185,710.28 × 47,979.96
  4. Step 4: Simplify right side
    123,845.90x = 8,910,371,805.99
  5. Step 5: Solve for x
    x = 8,910,371,805.99/123,845.90
  6. Step 6: Final answer
    x = 71,947.25

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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.