Home / 90,984.20-136,476.30-75,432.20

Finding the Fourth Proportional to 90,984.20, 136,476.30 and 75,432.20

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Solution

The fourth proportional to 90,984.20, 136,476.30 and 75,432.20 is: 113,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,984.20 : 136,476.30 = 75,432.20 : x
  2. Step 2: Convert to fraction form
    90,984.20/136,476.30 = 75,432.20/x
  3. Step 3: Cross multiply
    90,984.20x = 136,476.30 × 75,432.20
  4. Step 4: Simplify right side
    90,984.20x = 10,294,707,556.86
  5. Step 5: Solve for x
    x = 10,294,707,556.86/90,984.20
  6. Step 6: Final answer
    x = 113,148.30

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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.