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Finding the Fourth Proportional to 122,585.60, 169,172.48 and 68,869.53

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Solution

The fourth proportional to 122,585.60, 169,172.48 and 68,869.53 is: 95,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,585.60 : 169,172.48 = 68,869.53 : x
  2. Step 2: Convert to fraction form
    122,585.60/169,172.48 = 68,869.53/x
  3. Step 3: Cross multiply
    122,585.60x = 169,172.48 × 68,869.53
  4. Step 4: Simplify right side
    122,585.60x = 11,650,828,842.19
  5. Step 5: Solve for x
    x = 11,650,828,842.19/122,585.60
  6. Step 6: Final answer
    x = 95,042.40

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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.