Home / 90,945.68-136,237.08-72,257.36

Finding the Fourth Proportional to 90,945.68, 136,237.08 and 72,257.36

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Solution

The fourth proportional to 90,945.68, 136,237.08 and 72,257.36 is: 108,241.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,945.68 : 136,237.08 = 72,257.36 : x
  2. Step 2: Convert to fraction form
    90,945.68/136,237.08 = 72,257.36/x
  3. Step 3: Cross multiply
    90,945.68x = 136,237.08 × 72,257.36
  4. Step 4: Simplify right side
    90,945.68x = 9,844,131,734.91
  5. Step 5: Solve for x
    x = 9,844,131,734.91/90,945.68
  6. Step 6: Final answer
    x = 108,241.88

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1.5x scale

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.