Home / 123,942.10-185,917.55-39,691.32

Finding the Fourth Proportional to 123,942.10, 185,917.55 and 39,691.32

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Solution

The fourth proportional to 123,942.10, 185,917.55 and 39,691.32 is: 59,538.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,942.10 : 185,917.55 = 39,691.32 : x
  2. Step 2: Convert to fraction form
    123,942.10/185,917.55 = 39,691.32/x
  3. Step 3: Cross multiply
    123,942.10x = 185,917.55 × 39,691.32
  4. Step 4: Simplify right side
    123,942.10x = 7,379,312,970.67
  5. Step 5: Solve for x
    x = 7,379,312,970.67/123,942.10
  6. Step 6: Final answer
    x = 59,538.39

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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.