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Finding the Fourth Proportional to 99,422.60, 148,915.20 and 88,341.80

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Solution

The fourth proportional to 99,422.60, 148,915.20 and 88,341.80 is: 132,318.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,422.60 : 148,915.20 = 88,341.80 : x
  2. Step 2: Convert to fraction form
    99,422.60/148,915.20 = 88,341.80/x
  3. Step 3: Cross multiply
    99,422.60x = 148,915.20 × 88,341.80
  4. Step 4: Simplify right side
    99,422.60x = 13,155,436,815.36
  5. Step 5: Solve for x
    x = 13,155,436,815.36/99,422.60
  6. Step 6: Final answer
    x = 132,318.37

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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.