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Finding the Fourth Proportional to 132,087.60, 198,131.40 and 121,201.20

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Solution

The fourth proportional to 132,087.60, 198,131.40 and 121,201.20 is: 181,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,087.60 : 198,131.40 = 121,201.20 : x
  2. Step 2: Convert to fraction form
    132,087.60/198,131.40 = 121,201.20/x
  3. Step 3: Cross multiply
    132,087.60x = 198,131.40 × 121,201.20
  4. Step 4: Simplify right side
    132,087.60x = 24,013,763,437.68
  5. Step 5: Solve for x
    x = 24,013,763,437.68/132,087.60
  6. Step 6: Final answer
    x = 181,801.80

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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.