Home / 90,890.20-136,201.65-65,982.70

Finding the Fourth Proportional to 90,890.20, 136,201.65 and 65,982.70

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Solution

The fourth proportional to 90,890.20, 136,201.65 and 65,982.70 is: 98,877.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.20 : 136,201.65 = 65,982.70 : x
  2. Step 2: Convert to fraction form
    90,890.20/136,201.65 = 65,982.70/x
  3. Step 3: Cross multiply
    90,890.20x = 136,201.65 × 65,982.70
  4. Step 4: Simplify right side
    90,890.20x = 8,986,952,611.46
  5. Step 5: Solve for x
    x = 8,986,952,611.46/90,890.20
  6. Step 6: Final answer
    x = 98,877.03

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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.