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Finding the Fourth Proportional to 154,728.80, 231,920.40 and 88,200.80

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Solution

The fourth proportional to 154,728.80, 231,920.40 and 88,200.80 is: 132,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,728.80 : 231,920.40 = 88,200.80 : x
  2. Step 2: Convert to fraction form
    154,728.80/231,920.40 = 88,200.80/x
  3. Step 3: Cross multiply
    154,728.80x = 231,920.40 × 88,200.80
  4. Step 4: Simplify right side
    154,728.80x = 20,455,564,816.32
  5. Step 5: Solve for x
    x = 20,455,564,816.32/154,728.80
  6. Step 6: Final answer
    x = 132,202.70

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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.