Home / 129,913,872.57-179,281,140.21-71,178,765.39

Finding the Fourth Proportional to 129,913,872.57, 179,281,140.21 and 71,178,765.39

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Solution

The fourth proportional to 129,913,872.57, 179,281,140.21 and 71,178,765.39 is: 98,226,694.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,913,872.57 : 179,281,140.21 = 71,178,765.39 : x
  2. Step 2: Convert to fraction form
    129,913,872.57/179,281,140.21 = 71,178,765.39/x
  3. Step 3: Cross multiply
    129,913,872.57x = 179,281,140.21 × 71,178,765.39
  4. Step 4: Simplify right side
    129,913,872.57x = 12,761,010,217,859,286
  5. Step 5: Solve for x
    x = 12,761,010,217,859,286/129,913,872.57
  6. Step 6: Final answer
    x = 98,226,694.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.