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Finding the Fourth Proportional to 159,189.92, 219,805.45 and 122,337.79

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Solution

The fourth proportional to 159,189.92, 219,805.45 and 122,337.79 is: 168,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,189.92 : 219,805.45 = 122,337.79 : x
  2. Step 2: Convert to fraction form
    159,189.92/219,805.45 = 122,337.79/x
  3. Step 3: Cross multiply
    159,189.92x = 219,805.45 × 122,337.79
  4. Step 4: Simplify right side
    159,189.92x = 26,890,512,127.60
  5. Step 5: Solve for x
    x = 26,890,512,127.60/159,189.92
  6. Step 6: Final answer
    x = 168,920.95

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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.