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Finding the Fourth Proportional to 159,506.85, 220,119.26 and 87,886.85

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Solution

The fourth proportional to 159,506.85, 220,119.26 and 87,886.85 is: 121,283.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,506.85 : 220,119.26 = 87,886.85 : x
  2. Step 2: Convert to fraction form
    159,506.85/220,119.26 = 87,886.85/x
  3. Step 3: Cross multiply
    159,506.85x = 220,119.26 × 87,886.85
  4. Step 4: Simplify right side
    159,506.85x = 19,345,588,385.73
  5. Step 5: Solve for x
    x = 19,345,588,385.73/159,506.85
  6. Step 6: Final answer
    x = 121,283.75

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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.