Home / 144,768.12-217,117.86-81,616.20

Finding the Fourth Proportional to 144,768.12, 217,117.86 and 81,616.20

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Solution

The fourth proportional to 144,768.12, 217,117.86 and 81,616.20 is: 122,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,768.12 : 217,117.86 = 81,616.20 : x
  2. Step 2: Convert to fraction form
    144,768.12/217,117.86 = 81,616.20/x
  3. Step 3: Cross multiply
    144,768.12x = 217,117.86 × 81,616.20
  4. Step 4: Simplify right side
    144,768.12x = 17,720,334,685.33
  5. Step 5: Solve for x
    x = 17,720,334,685.33/144,768.12
  6. Step 6: Final answer
    x = 122,404.95

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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.