Home / 138,812,996.34-191,554,561.26-80,072,166.78

Finding the Fourth Proportional to 138,812,996.34, 191,554,561.26 and 80,072,166.78

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Solution

The fourth proportional to 138,812,996.34, 191,554,561.26 and 80,072,166.78 is: 110,495,336.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812,996.34 : 191,554,561.26 = 80,072,166.78 : x
  2. Step 2: Convert to fraction form
    138,812,996.34/191,554,561.26 = 80,072,166.78/x
  3. Step 3: Cross multiply
    138,812,996.34x = 191,554,561.26 × 80,072,166.78
  4. Step 4: Simplify right side
    138,812,996.34x = 15,338,188,776,680,446
  5. Step 5: Solve for x
    x = 15,338,188,776,680,446/138,812,996.34
  6. Step 6: Final answer
    x = 110,495,336.76

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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.