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Finding the Fourth Proportional to 159,422.40, 239,133.60 and 76,478.40

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Solution

The fourth proportional to 159,422.40, 239,133.60 and 76,478.40 is: 114,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,422.40 : 239,133.60 = 76,478.40 : x
  2. Step 2: Convert to fraction form
    159,422.40/239,133.60 = 76,478.40/x
  3. Step 3: Cross multiply
    159,422.40x = 239,133.60 × 76,478.40
  4. Step 4: Simplify right side
    159,422.40x = 18,288,555,114.24
  5. Step 5: Solve for x
    x = 18,288,555,114.24/159,422.40
  6. Step 6: Final answer
    x = 114,717.60

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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.