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Finding the Fourth Proportional to 159,640.56, 220,294.35 and 91,642.68

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Solution

The fourth proportional to 159,640.56, 220,294.35 and 91,642.68 is: 126,461.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,640.56 : 220,294.35 = 91,642.68 : x
  2. Step 2: Convert to fraction form
    159,640.56/220,294.35 = 91,642.68/x
  3. Step 3: Cross multiply
    159,640.56x = 220,294.35 × 91,642.68
  4. Step 4: Simplify right side
    159,640.56x = 20,188,364,622.86
  5. Step 5: Solve for x
    x = 20,188,364,622.86/159,640.56
  6. Step 6: Final answer
    x = 126,461.37

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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.