Home / 144,837.20-217,428.60-81,707.60

Finding the Fourth Proportional to 144,837.20, 217,428.60 and 81,707.60

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Solution

The fourth proportional to 144,837.20, 217,428.60 and 81,707.60 is: 122,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,837.20 : 217,428.60 = 81,707.60 : x
  2. Step 2: Convert to fraction form
    144,837.20/217,428.60 = 81,707.60/x
  3. Step 3: Cross multiply
    144,837.20x = 217,428.60 × 81,707.60
  4. Step 4: Simplify right side
    144,837.20x = 17,765,569,077.36
  5. Step 5: Solve for x
    x = 17,765,569,077.36/144,837.20
  6. Step 6: Final answer
    x = 122,658.88

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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.