Home / 125,022.16-187,611-91,228.96

Finding the Fourth Proportional to 125,022.16, 187,611 and 91,228.96

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Solution

The fourth proportional to 125,022.16, 187,611 and 91,228.96 is: 136,900.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,022.16 : 187,611 = 91,228.96 : x
  2. Step 2: Convert to fraction form
    125,022.16/187,611 = 91,228.96/x
  3. Step 3: Cross multiply
    125,022.16x = 187,611 × 91,228.96
  4. Step 4: Simplify right side
    125,022.16x = 17,115,556,414.56
  5. Step 5: Solve for x
    x = 17,115,556,414.56/125,022.16
  6. Step 6: Final answer
    x = 136,900.18

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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.