Home / 135,776.64-187,377.72-90,381.60

Finding the Fourth Proportional to 135,776.64, 187,377.72 and 90,381.60

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Solution

The fourth proportional to 135,776.64, 187,377.72 and 90,381.60 is: 124,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,776.64 : 187,377.72 = 90,381.60 : x
  2. Step 2: Convert to fraction form
    135,776.64/187,377.72 = 90,381.60/x
  3. Step 3: Cross multiply
    135,776.64x = 187,377.72 × 90,381.60
  4. Step 4: Simplify right side
    135,776.64x = 16,935,498,137.95
  5. Step 5: Solve for x
    x = 16,935,498,137.95/135,776.64
  6. Step 6: Final answer
    x = 124,730.57

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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.