Home / 126,615.36-174,773.16-72,921.78

Finding the Fourth Proportional to 126,615.36, 174,773.16 and 72,921.78

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Solution

The fourth proportional to 126,615.36, 174,773.16 and 72,921.78 is: 100,657.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,615.36 : 174,773.16 = 72,921.78 : x
  2. Step 2: Convert to fraction form
    126,615.36/174,773.16 = 72,921.78/x
  3. Step 3: Cross multiply
    126,615.36x = 174,773.16 × 72,921.78
  4. Step 4: Simplify right side
    126,615.36x = 12,744,769,923.42
  5. Step 5: Solve for x
    x = 12,744,769,923.42/126,615.36
  6. Step 6: Final answer
    x = 100,657.38

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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.