Home / 153,976.20-231,066.70-87,416.20

Finding the Fourth Proportional to 153,976.20, 231,066.70 and 87,416.20

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Solution

The fourth proportional to 153,976.20, 231,066.70 and 87,416.20 is: 131,182.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,976.20 : 231,066.70 = 87,416.20 : x
  2. Step 2: Convert to fraction form
    153,976.20/231,066.70 = 87,416.20/x
  3. Step 3: Cross multiply
    153,976.20x = 231,066.70 × 87,416.20
  4. Step 4: Simplify right side
    153,976.20x = 20,198,972,860.54
  5. Step 5: Solve for x
    x = 20,198,972,860.54/153,976.20
  6. Step 6: Final answer
    x = 131,182.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.