Home / 107,285.70-161,034.48-80,538.69

Finding the Fourth Proportional to 107,285.70, 161,034.48 and 80,538.69

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Solution

The fourth proportional to 107,285.70, 161,034.48 and 80,538.69 is: 120,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,285.70 : 161,034.48 = 80,538.69 : x
  2. Step 2: Convert to fraction form
    107,285.70/161,034.48 = 80,538.69/x
  3. Step 3: Cross multiply
    107,285.70x = 161,034.48 × 80,538.69
  4. Step 4: Simplify right side
    107,285.70x = 12,969,506,064.03
  5. Step 5: Solve for x
    x = 12,969,506,064.03/107,285.70
  6. Step 6: Final answer
    x = 120,887.56

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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.