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Finding the Fourth Proportional to 154,321.20, 231,870.60 and 98,188.20

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Solution

The fourth proportional to 154,321.20, 231,870.60 and 98,188.20 is: 147,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,321.20 : 231,870.60 = 98,188.20 : x
  2. Step 2: Convert to fraction form
    154,321.20/231,870.60 = 98,188.20/x
  3. Step 3: Cross multiply
    154,321.20x = 231,870.60 × 98,188.20
  4. Step 4: Simplify right side
    154,321.20x = 22,766,956,846.92
  5. Step 5: Solve for x
    x = 22,766,956,846.92/154,321.20
  6. Step 6: Final answer
    x = 147,529.68

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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.