Home / 142,913.20-197,216.76-79,251.52

Finding the Fourth Proportional to 142,913.20, 197,216.76 and 79,251.52

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Solution

The fourth proportional to 142,913.20, 197,216.76 and 79,251.52 is: 109,365.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,913.20 : 197,216.76 = 79,251.52 : x
  2. Step 2: Convert to fraction form
    142,913.20/197,216.76 = 79,251.52/x
  3. Step 3: Cross multiply
    142,913.20x = 197,216.76 × 79,251.52
  4. Step 4: Simplify right side
    142,913.20x = 15,629,727,999.48
  5. Step 5: Solve for x
    x = 15,629,727,999.48/142,913.20
  6. Step 6: Final answer
    x = 109,365.18

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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.