Home / 206,475.12-309,764.40-58,731.12

Finding the Fourth Proportional to 206,475.12, 309,764.40 and 58,731.12

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Solution

The fourth proportional to 206,475.12, 309,764.40 and 58,731.12 is: 88,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,475.12 : 309,764.40 = 58,731.12 : x
  2. Step 2: Convert to fraction form
    206,475.12/309,764.40 = 58,731.12/x
  3. Step 3: Cross multiply
    206,475.12x = 309,764.40 × 58,731.12
  4. Step 4: Simplify right side
    206,475.12x = 18,192,810,148.13
  5. Step 5: Solve for x
    x = 18,192,810,148.13/206,475.12
  6. Step 6: Final answer
    x = 88,111.39

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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.