Home / 123,761,072.66-170,780,281.87-71,553,472.78

Finding the Fourth Proportional to 123,761,072.66, 170,780,281.87 and 71,553,472.78

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Solution

The fourth proportional to 123,761,072.66, 170,780,281.87 and 71,553,472.78 is: 98,738,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,761,072.66 : 170,780,281.87 = 71,553,472.78 : x
  2. Step 2: Convert to fraction form
    123,761,072.66/170,780,281.87 = 71,553,472.78/x
  3. Step 3: Cross multiply
    123,761,072.66x = 170,780,281.87 × 71,553,472.78
  4. Step 4: Simplify right side
    123,761,072.66x = 12,219,922,250,145,774
  5. Step 5: Solve for x
    x = 12,219,922,250,145,774/123,761,072.66
  6. Step 6: Final answer
    x = 98,738,011.78

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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.