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Finding the Fourth Proportional to 132,425.80, 198,465.90 and 61,340.20

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Solution

The fourth proportional to 132,425.80, 198,465.90 and 61,340.20 is: 91,930.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,425.80 : 198,465.90 = 61,340.20 : x
  2. Step 2: Convert to fraction form
    132,425.80/198,465.90 = 61,340.20/x
  3. Step 3: Cross multiply
    132,425.80x = 198,465.90 × 61,340.20
  4. Step 4: Simplify right side
    132,425.80x = 12,173,937,999.18
  5. Step 5: Solve for x
    x = 12,173,937,999.18/132,425.80
  6. Step 6: Final answer
    x = 91,930.26

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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.