Home / 208,612,996.32-312,911,772.88-84,169,443.36

Finding the Fourth Proportional to 208,612,996.32, 312,911,772.88 and 84,169,443.36

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Solution

The fourth proportional to 208,612,996.32, 312,911,772.88 and 84,169,443.36 is: 126,251,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,612,996.32 : 312,911,772.88 = 84,169,443.36 : x
  2. Step 2: Convert to fraction form
    208,612,996.32/312,911,772.88 = 84,169,443.36/x
  3. Step 3: Cross multiply
    208,612,996.32x = 312,911,772.88 × 84,169,443.36
  4. Step 4: Simplify right side
    208,612,996.32x = 26,337,609,744,100,344
  5. Step 5: Solve for x
    x = 26,337,609,744,100,344/208,612,996.32
  6. Step 6: Final answer
    x = 126,251,049.59

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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.