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Finding the Fourth Proportional to 126,261, 174,240.36 and 69,672.24

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Solution

The fourth proportional to 126,261, 174,240.36 and 69,672.24 is: 96,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,261 : 174,240.36 = 69,672.24 : x
  2. Step 2: Convert to fraction form
    126,261/174,240.36 = 69,672.24/x
  3. Step 3: Cross multiply
    126,261x = 174,240.36 × 69,672.24
  4. Step 4: Simplify right side
    126,261x = 12,139,716,179.61
  5. Step 5: Solve for x
    x = 12,139,716,179.61/126,261
  6. Step 6: Final answer
    x = 96,147.79

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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.