Home / 123,508.57-170,441.87-66,919.95

Finding the Fourth Proportional to 123,508.57, 170,441.87 and 66,919.95

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Solution

The fourth proportional to 123,508.57, 170,441.87 and 66,919.95 is: 92,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,508.57 : 170,441.87 = 66,919.95 : x
  2. Step 2: Convert to fraction form
    123,508.57/170,441.87 = 66,919.95/x
  3. Step 3: Cross multiply
    123,508.57x = 170,441.87 × 66,919.95
  4. Step 4: Simplify right side
    123,508.57x = 11,405,960,980.76
  5. Step 5: Solve for x
    x = 11,405,960,980.76/123,508.57
  6. Step 6: Final answer
    x = 92,349.55

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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.