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Finding the Fourth Proportional to 153,133.92, 211,325.49 and 89,458.20

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Solution

The fourth proportional to 153,133.92, 211,325.49 and 89,458.20 is: 123,452.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,133.92 : 211,325.49 = 89,458.20 : x
  2. Step 2: Convert to fraction form
    153,133.92/211,325.49 = 89,458.20/x
  3. Step 3: Cross multiply
    153,133.92x = 211,325.49 × 89,458.20
  4. Step 4: Simplify right side
    153,133.92x = 18,904,797,949.52
  5. Step 5: Solve for x
    x = 18,904,797,949.52/153,133.92
  6. Step 6: Final answer
    x = 123,452.71

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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.