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Finding the Fourth Proportional to 169,479.16, 253,908.91 and 79,356.53

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Solution

The fourth proportional to 169,479.16, 253,908.91 and 79,356.53 is: 118,889.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,479.16 : 253,908.91 = 79,356.53 : x
  2. Step 2: Convert to fraction form
    169,479.16/253,908.91 = 79,356.53/x
  3. Step 3: Cross multiply
    169,479.16x = 253,908.91 × 79,356.53
  4. Step 4: Simplify right side
    169,479.16x = 20,149,330,767.65
  5. Step 5: Solve for x
    x = 20,149,330,767.65/169,479.16
  6. Step 6: Final answer
    x = 118,889.73

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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.