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Finding the Fourth Proportional to 159,645.79, 220,311.12 and 91,667.22

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Solution

The fourth proportional to 159,645.79, 220,311.12 and 91,667.22 is: 126,500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,645.79 : 220,311.12 = 91,667.22 : x
  2. Step 2: Convert to fraction form
    159,645.79/220,311.12 = 91,667.22/x
  3. Step 3: Cross multiply
    159,645.79x = 220,311.12 × 91,667.22
  4. Step 4: Simplify right side
    159,645.79x = 20,195,307,905.49
  5. Step 5: Solve for x
    x = 20,195,307,905.49/159,645.79
  6. Step 6: Final answer
    x = 126,500.72

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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.