Home / 101,579.02-140,132.37-65,780.80

Finding the Fourth Proportional to 101,579.02, 140,132.37 and 65,780.80

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Solution

The fourth proportional to 101,579.02, 140,132.37 and 65,780.80 is: 90,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,579.02 : 140,132.37 = 65,780.80 : x
  2. Step 2: Convert to fraction form
    101,579.02/140,132.37 = 65,780.80/x
  3. Step 3: Cross multiply
    101,579.02x = 140,132.37 × 65,780.80
  4. Step 4: Simplify right side
    101,579.02x = 9,218,019,404.50
  5. Step 5: Solve for x
    x = 9,218,019,404.50/101,579.02
  6. Step 6: Final answer
    x = 90,747.28

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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.