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Finding the Fourth Proportional to 132,681.70, 198,475.80 and 121,003.12

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Solution

The fourth proportional to 132,681.70, 198,475.80 and 121,003.12 is: 181,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,681.70 : 198,475.80 = 121,003.12 : x
  2. Step 2: Convert to fraction form
    132,681.70/198,475.80 = 121,003.12/x
  3. Step 3: Cross multiply
    132,681.70x = 198,475.80 × 121,003.12
  4. Step 4: Simplify right side
    132,681.70x = 24,016,191,044.50
  5. Step 5: Solve for x
    x = 24,016,191,044.50/132,681.70
  6. Step 6: Final answer
    x = 181,006.05

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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.