Home / 147,715.38-221,633.19-68,781.06

Finding the Fourth Proportional to 147,715.38, 221,633.19 and 68,781.06

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Solution

The fourth proportional to 147,715.38, 221,633.19 and 68,781.06 is: 103,199.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,715.38 : 221,633.19 = 68,781.06 : x
  2. Step 2: Convert to fraction form
    147,715.38/221,633.19 = 68,781.06/x
  3. Step 3: Cross multiply
    147,715.38x = 221,633.19 × 68,781.06
  4. Step 4: Simplify right side
    147,715.38x = 15,244,165,739.38
  5. Step 5: Solve for x
    x = 15,244,165,739.38/147,715.38
  6. Step 6: Final answer
    x = 103,199.58

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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.