Home / 125,500,521.90-173,136,997.20-78,375,782.76

Finding the Fourth Proportional to 125,500,521.90, 173,136,997.20 and 78,375,782.76

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Solution

The fourth proportional to 125,500,521.90, 173,136,997.20 and 78,375,782.76 is: 108,125,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,500,521.90 : 173,136,997.20 = 78,375,782.76 : x
  2. Step 2: Convert to fraction form
    125,500,521.90/173,136,997.20 = 78,375,782.76/x
  3. Step 3: Cross multiply
    125,500,521.90x = 173,136,997.20 × 78,375,782.76
  4. Step 4: Simplify right side
    125,500,521.90x = 13,569,747,680,265,928
  5. Step 5: Solve for x
    x = 13,569,747,680,265,928/125,500,521.90
  6. Step 6: Final answer
    x = 108,125,029.88

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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.