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Finding the Fourth Proportional to 143,169.52, 197,672.79 and 89,478.67

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Solution

The fourth proportional to 143,169.52, 197,672.79 and 89,478.67 is: 123,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,169.52 : 197,672.79 = 89,478.67 : x
  2. Step 2: Convert to fraction form
    143,169.52/197,672.79 = 89,478.67/x
  3. Step 3: Cross multiply
    143,169.52x = 197,672.79 × 89,478.67
  4. Step 4: Simplify right side
    143,169.52x = 17,687,498,344.39
  5. Step 5: Solve for x
    x = 17,687,498,344.39/143,169.52
  6. Step 6: Final answer
    x = 123,542.35

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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.