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Finding the Fourth Proportional to 123,887.70, 185,880.15 and 45,009.90

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Solution

The fourth proportional to 123,887.70, 185,880.15 and 45,009.90 is: 67,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,887.70 : 185,880.15 = 45,009.90 : x
  2. Step 2: Convert to fraction form
    123,887.70/185,880.15 = 45,009.90/x
  3. Step 3: Cross multiply
    123,887.70x = 185,880.15 × 45,009.90
  4. Step 4: Simplify right side
    123,887.70x = 8,366,446,963.49
  5. Step 5: Solve for x
    x = 8,366,446,963.49/123,887.70
  6. Step 6: Final answer
    x = 67,532.51

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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.