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Finding the Fourth Proportional to 159,169.33, 219,649.05 and 87,549.34

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Solution

The fourth proportional to 159,169.33, 219,649.05 and 87,549.34 is: 120,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,169.33 : 219,649.05 = 87,549.34 : x
  2. Step 2: Convert to fraction form
    159,169.33/219,649.05 = 87,549.34/x
  3. Step 3: Cross multiply
    159,169.33x = 219,649.05 × 87,549.34
  4. Step 4: Simplify right side
    159,169.33x = 19,230,129,359.13
  5. Step 5: Solve for x
    x = 19,230,129,359.13/159,169.33
  6. Step 6: Final answer
    x = 120,815.55

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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.