Home / 82,557.20-123,835.80-78,349.98

Finding the Fourth Proportional to 82,557.20, 123,835.80 and 78,349.98

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Solution

The fourth proportional to 82,557.20, 123,835.80 and 78,349.98 is: 117,524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,557.20 : 123,835.80 = 78,349.98 : x
  2. Step 2: Convert to fraction form
    82,557.20/123,835.80 = 78,349.98/x
  3. Step 3: Cross multiply
    82,557.20x = 123,835.80 × 78,349.98
  4. Step 4: Simplify right side
    82,557.20x = 9,702,532,453.28
  5. Step 5: Solve for x
    x = 9,702,532,453.28/82,557.20
  6. Step 6: Final answer
    x = 117,524.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.