Home / 123,508.13-170,441.82-66,919.50

Finding the Fourth Proportional to 123,508.13, 170,441.82 and 66,919.50

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Solution

The fourth proportional to 123,508.13, 170,441.82 and 66,919.50 is: 92,349.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,508.13 : 170,441.82 = 66,919.50 : x
  2. Step 2: Convert to fraction form
    123,508.13/170,441.82 = 66,919.50/x
  3. Step 3: Cross multiply
    123,508.13x = 170,441.82 × 66,919.50
  4. Step 4: Simplify right side
    123,508.13x = 11,405,881,373.49
  5. Step 5: Solve for x
    x = 11,405,881,373.49/123,508.13
  6. Step 6: Final answer
    x = 92,349.24

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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.