Home / 142,970.20-197,295.78-79,306.60

Finding the Fourth Proportional to 142,970.20, 197,295.78 and 79,306.60

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Solution

The fourth proportional to 142,970.20, 197,295.78 and 79,306.60 is: 109,441.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.20 : 197,295.78 = 79,306.60 : x
  2. Step 2: Convert to fraction form
    142,970.20/197,295.78 = 79,306.60/x
  3. Step 3: Cross multiply
    142,970.20x = 197,295.78 × 79,306.60
  4. Step 4: Simplify right side
    142,970.20x = 15,646,857,506.15
  5. Step 5: Solve for x
    x = 15,646,857,506.15/142,970.20
  6. Step 6: Final answer
    x = 109,441.39

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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.