Home / 135,436.10-186,932.91-90,115.98

Finding the Fourth Proportional to 135,436.10, 186,932.91 and 90,115.98

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Solution

The fourth proportional to 135,436.10, 186,932.91 and 90,115.98 is: 124,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,436.10 : 186,932.91 = 90,115.98 : x
  2. Step 2: Convert to fraction form
    135,436.10/186,932.91 = 90,115.98/x
  3. Step 3: Cross multiply
    135,436.10x = 186,932.91 × 90,115.98
  4. Step 4: Simplify right side
    135,436.10x = 16,845,642,378.90
  5. Step 5: Solve for x
    x = 16,845,642,378.90/135,436.10
  6. Step 6: Final answer
    x = 124,380.74

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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.