Home / 159,678.46-220,348.85-91,647.55

Finding the Fourth Proportional to 159,678.46, 220,348.85 and 91,647.55

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Solution

The fourth proportional to 159,678.46, 220,348.85 and 91,647.55 is: 126,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,678.46 : 220,348.85 = 91,647.55 : x
  2. Step 2: Convert to fraction form
    159,678.46/220,348.85 = 91,647.55/x
  3. Step 3: Cross multiply
    159,678.46x = 220,348.85 × 91,647.55
  4. Step 4: Simplify right side
    159,678.46x = 20,194,431,341.07
  5. Step 5: Solve for x
    x = 20,194,431,341.07/159,678.46
  6. Step 6: Final answer
    x = 126,469.36

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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.