Home / 129,292,439.40-193,938,659.10-80,825,020.20

Finding the Fourth Proportional to 129,292,439.40, 193,938,659.10 and 80,825,020.20

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Solution

The fourth proportional to 129,292,439.40, 193,938,659.10 and 80,825,020.20 is: 121,237,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,292,439.40 : 193,938,659.10 = 80,825,020.20 : x
  2. Step 2: Convert to fraction form
    129,292,439.40/193,938,659.10 = 80,825,020.20/x
  3. Step 3: Cross multiply
    129,292,439.40x = 193,938,659.10 × 80,825,020.20
  4. Step 4: Simplify right side
    129,292,439.40x = 15,675,096,039,318,414
  5. Step 5: Solve for x
    x = 15,675,096,039,318,414/129,292,439.40
  6. Step 6: Final answer
    x = 121,237,530.30

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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.