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Finding the Fourth Proportional to 98,447.40, 147,452.40 and 80,951.40

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Solution

The fourth proportional to 98,447.40, 147,452.40 and 80,951.40 is: 121,247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,447.40 : 147,452.40 = 80,951.40 : x
  2. Step 2: Convert to fraction form
    98,447.40/147,452.40 = 80,951.40/x
  3. Step 3: Cross multiply
    98,447.40x = 147,452.40 × 80,951.40
  4. Step 4: Simplify right side
    98,447.40x = 11,936,478,213.36
  5. Step 5: Solve for x
    x = 11,936,478,213.36/98,447.40
  6. Step 6: Final answer
    x = 121,247.27

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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.