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Finding the Fourth Proportional to 122,503.52, 169,073.16 and 74,784.52

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Solution

The fourth proportional to 122,503.52, 169,073.16 and 74,784.52 is: 103,213.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,503.52 : 169,073.16 = 74,784.52 : x
  2. Step 2: Convert to fraction form
    122,503.52/169,073.16 = 74,784.52/x
  3. Step 3: Cross multiply
    122,503.52x = 169,073.16 × 74,784.52
  4. Step 4: Simplify right side
    122,503.52x = 12,644,055,115.48
  5. Step 5: Solve for x
    x = 12,644,055,115.48/122,503.52
  6. Step 6: Final answer
    x = 103,213.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.