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Finding the Fourth Proportional to 132,192,047.70, 198,288,071.55 and 80,459,874.90

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Solution

The fourth proportional to 132,192,047.70, 198,288,071.55 and 80,459,874.90 is: 120,689,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,192,047.70 : 198,288,071.55 = 80,459,874.90 : x
  2. Step 2: Convert to fraction form
    132,192,047.70/198,288,071.55 = 80,459,874.90/x
  3. Step 3: Cross multiply
    132,192,047.70x = 198,288,071.55 × 80,459,874.90
  4. Step 4: Simplify right side
    132,192,047.70x = 15,954,233,431,075,252
  5. Step 5: Solve for x
    x = 15,954,233,431,075,252/132,192,047.70
  6. Step 6: Final answer
    x = 120,689,812.35

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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.