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Finding the Fourth Proportional to 153,155.91, 211,324.17 and 89,481.42

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Solution

The fourth proportional to 153,155.91, 211,324.17 and 89,481.42 is: 123,466.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,155.91 : 211,324.17 = 89,481.42 : x
  2. Step 2: Convert to fraction form
    153,155.91/211,324.17 = 89,481.42/x
  3. Step 3: Cross multiply
    153,155.91x = 211,324.17 × 89,481.42
  4. Step 4: Simplify right side
    153,155.91x = 18,909,586,811.92
  5. Step 5: Solve for x
    x = 18,909,586,811.92/153,155.91
  6. Step 6: Final answer
    x = 123,466.26

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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.