Home / 108,089.20-149,225.36-71,839.80

Finding the Fourth Proportional to 108,089.20, 149,225.36 and 71,839.80

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Solution

The fourth proportional to 108,089.20, 149,225.36 and 71,839.80 is: 99,180.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,089.20 : 149,225.36 = 71,839.80 : x
  2. Step 2: Convert to fraction form
    108,089.20/149,225.36 = 71,839.80/x
  3. Step 3: Cross multiply
    108,089.20x = 149,225.36 × 71,839.80
  4. Step 4: Simplify right side
    108,089.20x = 10,720,320,017.33
  5. Step 5: Solve for x
    x = 10,720,320,017.33/108,089.20
  6. Step 6: Final answer
    x = 99,180.31

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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.