Home / 111,853.20-154,379.52-64,138.80

Finding the Fourth Proportional to 111,853.20, 154,379.52 and 64,138.80

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Solution

The fourth proportional to 111,853.20, 154,379.52 and 64,138.80 is: 88,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,853.20 : 154,379.52 = 64,138.80 : x
  2. Step 2: Convert to fraction form
    111,853.20/154,379.52 = 64,138.80/x
  3. Step 3: Cross multiply
    111,853.20x = 154,379.52 × 64,138.80
  4. Step 4: Simplify right side
    111,853.20x = 9,901,717,157.38
  5. Step 5: Solve for x
    x = 9,901,717,157.38/111,853.20
  6. Step 6: Final answer
    x = 88,524.22

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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.