Home / 90,255.44-124,399.32-68,988.08

Finding the Fourth Proportional to 90,255.44, 124,399.32 and 68,988.08

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Solution

The fourth proportional to 90,255.44, 124,399.32 and 68,988.08 is: 95,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,255.44 : 124,399.32 = 68,988.08 : x
  2. Step 2: Convert to fraction form
    90,255.44/124,399.32 = 68,988.08/x
  3. Step 3: Cross multiply
    90,255.44x = 124,399.32 × 68,988.08
  4. Step 4: Simplify right side
    90,255.44x = 8,582,070,240.11
  5. Step 5: Solve for x
    x = 8,582,070,240.11/90,255.44
  6. Step 6: Final answer
    x = 95,086.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.