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Finding the Fourth Proportional to 98,168.40, 147,033.90 and 80,672.40

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Solution

The fourth proportional to 98,168.40, 147,033.90 and 80,672.40 is: 120,828.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,168.40 : 147,033.90 = 80,672.40 : x
  2. Step 2: Convert to fraction form
    98,168.40/147,033.90 = 80,672.40/x
  3. Step 3: Cross multiply
    98,168.40x = 147,033.90 × 80,672.40
  4. Step 4: Simplify right side
    98,168.40x = 11,861,577,594.36
  5. Step 5: Solve for x
    x = 11,861,577,594.36/98,168.40
  6. Step 6: Final answer
    x = 120,828.88

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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.