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Finding the Fourth Proportional to 122,044.59, 168,499.85 and 83,791.80

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Solution

The fourth proportional to 122,044.59, 168,499.85 and 83,791.80 is: 115,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,044.59 : 168,499.85 = 83,791.80 : x
  2. Step 2: Convert to fraction form
    122,044.59/168,499.85 = 83,791.80/x
  3. Step 3: Cross multiply
    122,044.59x = 168,499.85 × 83,791.80
  4. Step 4: Simplify right side
    122,044.59x = 14,118,905,312.27
  5. Step 5: Solve for x
    x = 14,118,905,312.27/122,044.59
  6. Step 6: Final answer
    x = 115,686.45

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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.