Home / 143,359.08-197,818.25-78,817.65

Finding the Fourth Proportional to 143,359.08, 197,818.25 and 78,817.65

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Solution

The fourth proportional to 143,359.08, 197,818.25 and 78,817.65 is: 108,758.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,359.08 : 197,818.25 = 78,817.65 : x
  2. Step 2: Convert to fraction form
    143,359.08/197,818.25 = 78,817.65/x
  3. Step 3: Cross multiply
    143,359.08x = 197,818.25 × 78,817.65
  4. Step 4: Simplify right side
    143,359.08x = 15,591,569,198.02
  5. Step 5: Solve for x
    x = 15,591,569,198.02/143,359.08
  6. Step 6: Final answer
    x = 108,758.85

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1.5x scale

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.