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Finding the Fourth Proportional to 145,200.60, 217,800.90 and 132,078.60

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Solution

The fourth proportional to 145,200.60, 217,800.90 and 132,078.60 is: 198,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,200.60 : 217,800.90 = 132,078.60 : x
  2. Step 2: Convert to fraction form
    145,200.60/217,800.90 = 132,078.60/x
  3. Step 3: Cross multiply
    145,200.60x = 217,800.90 × 132,078.60
  4. Step 4: Simplify right side
    145,200.60x = 28,766,837,950.74
  5. Step 5: Solve for x
    x = 28,766,837,950.74/145,200.60
  6. Step 6: Final answer
    x = 198,117.90

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1.5x scale

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.