Home / 101,868.12-140,580.30-57,156.12

Finding the Fourth Proportional to 101,868.12, 140,580.30 and 57,156.12

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Solution

The fourth proportional to 101,868.12, 140,580.30 and 57,156.12 is: 78,876.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,868.12 : 140,580.30 = 57,156.12 : x
  2. Step 2: Convert to fraction form
    101,868.12/140,580.30 = 57,156.12/x
  3. Step 3: Cross multiply
    101,868.12x = 140,580.30 × 57,156.12
  4. Step 4: Simplify right side
    101,868.12x = 8,035,024,496.44
  5. Step 5: Solve for x
    x = 8,035,024,496.44/101,868.12
  6. Step 6: Final answer
    x = 78,876.73

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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.