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Finding the Fourth Proportional to 148,876.80, 222,854.40 and 86,361.60

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Solution

The fourth proportional to 148,876.80, 222,854.40 and 86,361.60 is: 129,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,876.80 : 222,854.40 = 86,361.60 : x
  2. Step 2: Convert to fraction form
    148,876.80/222,854.40 = 86,361.60/x
  3. Step 3: Cross multiply
    148,876.80x = 222,854.40 × 86,361.60
  4. Step 4: Simplify right side
    148,876.80x = 19,246,062,551.04
  5. Step 5: Solve for x
    x = 19,246,062,551.04/148,876.80
  6. Step 6: Final answer
    x = 129,275.10

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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.