Home / 129,984,060.42-179,396,396.98-80,440,390.14

Finding the Fourth Proportional to 129,984,060.42, 179,396,396.98 and 80,440,390.14

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Solution

The fourth proportional to 129,984,060.42, 179,396,396.98 and 80,440,390.14 is: 111,019,121.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,984,060.42 : 179,396,396.98 = 80,440,390.14 : x
  2. Step 2: Convert to fraction form
    129,984,060.42/179,396,396.98 = 80,440,390.14/x
  3. Step 3: Cross multiply
    129,984,060.42x = 179,396,396.98 × 80,440,390.14
  4. Step 4: Simplify right side
    129,984,060.42x = 14,430,716,162,781,518
  5. Step 5: Solve for x
    x = 14,430,716,162,781,518/129,984,060.42
  6. Step 6: Final answer
    x = 111,019,121.24

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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.