Home / 149,379.98-206,141.76-81,397.52

Finding the Fourth Proportional to 149,379.98, 206,141.76 and 81,397.52

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Solution

The fourth proportional to 149,379.98, 206,141.76 and 81,397.52 is: 112,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.98 : 206,141.76 = 81,397.52 : x
  2. Step 2: Convert to fraction form
    149,379.98/206,141.76 = 81,397.52/x
  3. Step 3: Cross multiply
    149,379.98x = 206,141.76 × 81,397.52
  4. Step 4: Simplify right side
    149,379.98x = 16,779,427,001.73
  5. Step 5: Solve for x
    x = 16,779,427,001.73/149,379.98
  6. Step 6: Final answer
    x = 112,327.15

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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.