Home / 90,862.56-136,083.24-87,710.85

Finding the Fourth Proportional to 90,862.56, 136,083.24 and 87,710.85

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Solution

The fourth proportional to 90,862.56, 136,083.24 and 87,710.85 is: 131,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.56 : 136,083.24 = 87,710.85 : x
  2. Step 2: Convert to fraction form
    90,862.56/136,083.24 = 87,710.85/x
  3. Step 3: Cross multiply
    90,862.56x = 136,083.24 × 87,710.85
  4. Step 4: Simplify right side
    90,862.56x = 11,935,976,651.15
  5. Step 5: Solve for x
    x = 11,935,976,651.15/90,862.56
  6. Step 6: Final answer
    x = 131,362.98

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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.