Home / 144,338.62-216,704.26-81,203.17

Finding the Fourth Proportional to 144,338.62, 216,704.26 and 81,203.17

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Solution

The fourth proportional to 144,338.62, 216,704.26 and 81,203.17 is: 121,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,338.62 : 216,704.26 = 81,203.17 : x
  2. Step 2: Convert to fraction form
    144,338.62/216,704.26 = 81,203.17/x
  3. Step 3: Cross multiply
    144,338.62x = 216,704.26 × 81,203.17
  4. Step 4: Simplify right side
    144,338.62x = 17,597,071,780.98
  5. Step 5: Solve for x
    x = 17,597,071,780.98/144,338.62
  6. Step 6: Final answer
    x = 121,915.20

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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.