Home / 90,854.20-136,151.70-66,975.40

Finding the Fourth Proportional to 90,854.20, 136,151.70 and 66,975.40

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Solution

The fourth proportional to 90,854.20, 136,151.70 and 66,975.40 is: 100,367.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,854.20 : 136,151.70 = 66,975.40 : x
  2. Step 2: Convert to fraction form
    90,854.20/136,151.70 = 66,975.40/x
  3. Step 3: Cross multiply
    90,854.20x = 136,151.70 × 66,975.40
  4. Step 4: Simplify right side
    90,854.20x = 9,118,814,568.18
  5. Step 5: Solve for x
    x = 9,118,814,568.18/90,854.20
  6. Step 6: Final answer
    x = 100,367.56

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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.