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Finding the Fourth Proportional to 144,718.56, 217,151.91 and 68,902.92

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Solution

The fourth proportional to 144,718.56, 217,151.91 and 68,902.92 is: 103,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,718.56 : 217,151.91 = 68,902.92 : x
  2. Step 2: Convert to fraction form
    144,718.56/217,151.91 = 68,902.92/x
  3. Step 3: Cross multiply
    144,718.56x = 217,151.91 × 68,902.92
  4. Step 4: Simplify right side
    144,718.56x = 14,962,400,682.58
  5. Step 5: Solve for x
    x = 14,962,400,682.58/144,718.56
  6. Step 6: Final answer
    x = 103,389.65

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1.5x scale

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.