Home / 80,510,521.70-120,765,782.55-67,755,937.70

Finding the Fourth Proportional to 80,510,521.70, 120,765,782.55 and 67,755,937.70

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Solution

The fourth proportional to 80,510,521.70, 120,765,782.55 and 67,755,937.70 is: 101,633,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,510,521.70 : 120,765,782.55 = 67,755,937.70 : x
  2. Step 2: Convert to fraction form
    80,510,521.70/120,765,782.55 = 67,755,937.70/x
  3. Step 3: Cross multiply
    80,510,521.70x = 120,765,782.55 × 67,755,937.70
  4. Step 4: Simplify right side
    80,510,521.70x = 8,182,598,838,749,547
  5. Step 5: Solve for x
    x = 8,182,598,838,749,547/80,510,521.70
  6. Step 6: Final answer
    x = 101,633,906.55

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1.5x scale

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.