Home / 142,905.64-197,217.60-79,242.04

Finding the Fourth Proportional to 142,905.64, 197,217.60 and 79,242.04

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Solution

The fourth proportional to 142,905.64, 197,217.60 and 79,242.04 is: 109,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,905.64 : 197,217.60 = 79,242.04 : x
  2. Step 2: Convert to fraction form
    142,905.64/197,217.60 = 79,242.04/x
  3. Step 3: Cross multiply
    142,905.64x = 197,217.60 × 79,242.04
  4. Step 4: Simplify right side
    142,905.64x = 15,627,924,947.90
  5. Step 5: Solve for x
    x = 15,627,924,947.90/142,905.64
  6. Step 6: Final answer
    x = 109,358.35

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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.