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Finding the Fourth Proportional to 158,357.92, 218,531.22 and 85,760.22

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Solution

The fourth proportional to 158,357.92, 218,531.22 and 85,760.22 is: 118,347.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,357.92 : 218,531.22 = 85,760.22 : x
  2. Step 2: Convert to fraction form
    158,357.92/218,531.22 = 85,760.22/x
  3. Step 3: Cross multiply
    158,357.92x = 218,531.22 × 85,760.22
  4. Step 4: Simplify right side
    158,357.92x = 18,741,285,279.34
  5. Step 5: Solve for x
    x = 18,741,285,279.34/158,357.92
  6. Step 6: Final answer
    x = 118,347.64

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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.