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Finding the Fourth Proportional to 132,403.40, 198,605.10 and 119,281.40

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Solution

The fourth proportional to 132,403.40, 198,605.10 and 119,281.40 is: 178,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,403.40 : 198,605.10 = 119,281.40 : x
  2. Step 2: Convert to fraction form
    132,403.40/198,605.10 = 119,281.40/x
  3. Step 3: Cross multiply
    132,403.40x = 198,605.10 × 119,281.40
  4. Step 4: Simplify right side
    132,403.40x = 23,689,894,375.14
  5. Step 5: Solve for x
    x = 23,689,894,375.14/132,403.40
  6. Step 6: Final answer
    x = 178,922.10

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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.