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Finding the Fourth Proportional to 153,324.80, 211,578.72 and 89,658.80

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Solution

The fourth proportional to 153,324.80, 211,578.72 and 89,658.80 is: 123,723.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,324.80 : 211,578.72 = 89,658.80 : x
  2. Step 2: Convert to fraction form
    153,324.80/211,578.72 = 89,658.80/x
  3. Step 3: Cross multiply
    153,324.80x = 211,578.72 × 89,658.80
  4. Step 4: Simplify right side
    153,324.80x = 18,969,894,140.74
  5. Step 5: Solve for x
    x = 18,969,894,140.74/153,324.80
  6. Step 6: Final answer
    x = 123,723.59

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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.