Home / 98,999.20-148,239.60-72,560.80

Finding the Fourth Proportional to 98,999.20, 148,239.60 and 72,560.80

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Solution

The fourth proportional to 98,999.20, 148,239.60 and 72,560.80 is: 108,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,999.20 : 148,239.60 = 72,560.80 : x
  2. Step 2: Convert to fraction form
    98,999.20/148,239.60 = 72,560.80/x
  3. Step 3: Cross multiply
    98,999.20x = 148,239.60 × 72,560.80
  4. Step 4: Simplify right side
    98,999.20x = 10,756,383,967.68
  5. Step 5: Solve for x
    x = 10,756,383,967.68/98,999.20
  6. Step 6: Final answer
    x = 108,651.22

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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.