Home / 126,728.28-174,884.40-70,139.52

Finding the Fourth Proportional to 126,728.28, 174,884.40 and 70,139.52

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Solution

The fourth proportional to 126,728.28, 174,884.40 and 70,139.52 is: 96,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.28 : 174,884.40 = 70,139.52 : x
  2. Step 2: Convert to fraction form
    126,728.28/174,884.40 = 70,139.52/x
  3. Step 3: Cross multiply
    126,728.28x = 174,884.40 × 70,139.52
  4. Step 4: Simplify right side
    126,728.28x = 12,266,307,871.49
  5. Step 5: Solve for x
    x = 12,266,307,871.49/126,728.28
  6. Step 6: Final answer
    x = 96,792.19

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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.