Home / 215,731.83-297,697.12-123,829.88

Finding the Fourth Proportional to 215,731.83, 297,697.12 and 123,829.88

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Solution

The fourth proportional to 215,731.83, 297,697.12 and 123,829.88 is: 170,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,731.83 : 297,697.12 = 123,829.88 : x
  2. Step 2: Convert to fraction form
    215,731.83/297,697.12 = 123,829.88/x
  3. Step 3: Cross multiply
    215,731.83x = 297,697.12 × 123,829.88
  4. Step 4: Simplify right side
    215,731.83x = 36,863,799,080.61
  5. Step 5: Solve for x
    x = 36,863,799,080.61/215,731.83
  6. Step 6: Final answer
    x = 170,877.89

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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.