Home / 107,939.74-148,967.55-80,668.46

Finding the Fourth Proportional to 107,939.74, 148,967.55 and 80,668.46

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Solution

The fourth proportional to 107,939.74, 148,967.55 and 80,668.46 is: 111,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.74 : 148,967.55 = 80,668.46 : x
  2. Step 2: Convert to fraction form
    107,939.74/148,967.55 = 80,668.46/x
  3. Step 3: Cross multiply
    107,939.74x = 148,967.55 × 80,668.46
  4. Step 4: Simplify right side
    107,939.74x = 12,016,982,848.47
  5. Step 5: Solve for x
    x = 12,016,982,848.47/107,939.74
  6. Step 6: Final answer
    x = 111,330.48

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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.