Home / 90,735.30-136,124.55-38,117.70

Finding the Fourth Proportional to 90,735.30, 136,124.55 and 38,117.70

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Solution

The fourth proportional to 90,735.30, 136,124.55 and 38,117.70 is: 57,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.30 : 136,124.55 = 38,117.70 : x
  2. Step 2: Convert to fraction form
    90,735.30/136,124.55 = 38,117.70/x
  3. Step 3: Cross multiply
    90,735.30x = 136,124.55 × 38,117.70
  4. Step 4: Simplify right side
    90,735.30x = 5,188,754,759.54
  5. Step 5: Solve for x
    x = 5,188,754,759.54/90,735.30
  6. Step 6: Final answer
    x = 57,185.62

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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.