Home / 138,701,998.20-191,411,850.42-79,162,100.10

Finding the Fourth Proportional to 138,701,998.20, 191,411,850.42 and 79,162,100.10

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Solution

The fourth proportional to 138,701,998.20, 191,411,850.42 and 79,162,100.10 is: 109,245,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,701,998.20 : 191,411,850.42 = 79,162,100.10 : x
  2. Step 2: Convert to fraction form
    138,701,998.20/191,411,850.42 = 79,162,100.10/x
  3. Step 3: Cross multiply
    138,701,998.20x = 191,411,850.42 × 79,162,100.10
  4. Step 4: Simplify right side
    138,701,998.20x = 15,152,564,063,274,264
  5. Step 5: Solve for x
    x = 15,152,564,063,274,264/138,701,998.20
  6. Step 6: Final answer
    x = 109,245,463.37

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1.5x scale

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.