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Finding the Fourth Proportional to 159,559.09, 220,191.09 and 87,939.10

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Solution

The fourth proportional to 159,559.09, 220,191.09 and 87,939.10 is: 121,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,559.09 : 220,191.09 = 87,939.10 : x
  2. Step 2: Convert to fraction form
    159,559.09/220,191.09 = 87,939.10/x
  3. Step 3: Cross multiply
    159,559.09x = 220,191.09 × 87,939.10
  4. Step 4: Simplify right side
    159,559.09x = 19,363,405,484.17
  5. Step 5: Solve for x
    x = 19,363,405,484.17/159,559.09
  6. Step 6: Final answer
    x = 121,355.70

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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.