Home / 125,394.75-188,121.29-90,271.53

Finding the Fourth Proportional to 125,394.75, 188,121.29 and 90,271.53

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Solution

The fourth proportional to 125,394.75, 188,121.29 and 90,271.53 is: 135,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.75 : 188,121.29 = 90,271.53 : x
  2. Step 2: Convert to fraction form
    125,394.75/188,121.29 = 90,271.53/x
  3. Step 3: Cross multiply
    125,394.75x = 188,121.29 × 90,271.53
  4. Step 4: Simplify right side
    125,394.75x = 16,981,996,222.52
  5. Step 5: Solve for x
    x = 16,981,996,222.52/125,394.75
  6. Step 6: Final answer
    x = 135,428.29

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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.