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Finding the Fourth Proportional to 118,115.60, 162,948.29 and 75,072.11

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Solution

The fourth proportional to 118,115.60, 162,948.29 and 75,072.11 is: 103,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,115.60 : 162,948.29 = 75,072.11 : x
  2. Step 2: Convert to fraction form
    118,115.60/162,948.29 = 75,072.11/x
  3. Step 3: Cross multiply
    118,115.60x = 162,948.29 × 75,072.11
  4. Step 4: Simplify right side
    118,115.60x = 12,232,870,761.09
  5. Step 5: Solve for x
    x = 12,232,870,761.09/118,115.60
  6. Step 6: Final answer
    x = 103,566.94

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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.