Home / 128,522,486.40-192,782,500.80-31,478,620.80

Finding the Fourth Proportional to 128,522,486.40, 192,782,500.80 and 31,478,620.80

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Solution

The fourth proportional to 128,522,486.40, 192,782,500.80 and 31,478,620.80 is: 47,217,630.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,522,486.40 : 192,782,500.80 = 31,478,620.80 : x
  2. Step 2: Convert to fraction form
    128,522,486.40/192,782,500.80 = 31,478,620.80/x
  3. Step 3: Cross multiply
    128,522,486.40x = 192,782,500.80 × 31,478,620.80
  4. Step 4: Simplify right side
    128,522,486.40x = 6,068,527,239,558,897
  5. Step 5: Solve for x
    x = 6,068,527,239,558,897/128,522,486.40
  6. Step 6: Final answer
    x = 47,217,630.23

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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.