Home / 142,927.20-197,251.65-79,285.50

Finding the Fourth Proportional to 142,927.20, 197,251.65 and 79,285.50

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Solution

The fourth proportional to 142,927.20, 197,251.65 and 79,285.50 is: 109,420.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,927.20 : 197,251.65 = 79,285.50 : x
  2. Step 2: Convert to fraction form
    142,927.20/197,251.65 = 79,285.50/x
  3. Step 3: Cross multiply
    142,927.20x = 197,251.65 × 79,285.50
  4. Step 4: Simplify right side
    142,927.20x = 15,639,195,696.08
  5. Step 5: Solve for x
    x = 15,639,195,696.08/142,927.20
  6. Step 6: Final answer
    x = 109,420.71

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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.