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Finding the Fourth Proportional to 154,479.92, 213,132.76 and 86,486.92

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Solution

The fourth proportional to 154,479.92, 213,132.76 and 86,486.92 is: 119,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,479.92 : 213,132.76 = 86,486.92 : x
  2. Step 2: Convert to fraction form
    154,479.92/213,132.76 = 86,486.92/x
  3. Step 3: Cross multiply
    154,479.92x = 213,132.76 × 86,486.92
  4. Step 4: Simplify right side
    154,479.92x = 18,433,195,963.50
  5. Step 5: Solve for x
    x = 18,433,195,963.50/154,479.92
  6. Step 6: Final answer
    x = 119,324.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.