Home / 123,508.31-170,441.57-66,919.68

Finding the Fourth Proportional to 123,508.31, 170,441.57 and 66,919.68

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Solution

The fourth proportional to 123,508.31, 170,441.57 and 66,919.68 is: 92,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,508.31 : 170,441.57 = 66,919.68 : x
  2. Step 2: Convert to fraction form
    123,508.31/170,441.57 = 66,919.68/x
  3. Step 3: Cross multiply
    123,508.31x = 170,441.57 × 66,919.68
  4. Step 4: Simplify right side
    123,508.31x = 11,405,895,323.10
  5. Step 5: Solve for x
    x = 11,405,895,323.10/123,508.31
  6. Step 6: Final answer
    x = 92,349.22

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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.