Home / 142,902.60-197,213.46-79,239.04

Finding the Fourth Proportional to 142,902.60, 197,213.46 and 79,239.04

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Solution

The fourth proportional to 142,902.60, 197,213.46 and 79,239.04 is: 109,354.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,902.60 : 197,213.46 = 79,239.04 : x
  2. Step 2: Convert to fraction form
    142,902.60/197,213.46 = 79,239.04/x
  3. Step 3: Cross multiply
    142,902.60x = 197,213.46 × 79,239.04
  4. Step 4: Simplify right side
    142,902.60x = 15,627,005,245.48
  5. Step 5: Solve for x
    x = 15,627,005,245.48/142,902.60
  6. Step 6: Final answer
    x = 109,354.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.