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Finding the Fourth Proportional to 126,794.88, 174,988.80 and 70,217.28

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Solution

The fourth proportional to 126,794.88, 174,988.80 and 70,217.28 is: 96,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,794.88 : 174,988.80 = 70,217.28 : x
  2. Step 2: Convert to fraction form
    126,794.88/174,988.80 = 70,217.28/x
  3. Step 3: Cross multiply
    126,794.88x = 174,988.80 × 70,217.28
  4. Step 4: Simplify right side
    126,794.88x = 12,287,237,566.46
  5. Step 5: Solve for x
    x = 12,287,237,566.46/126,794.88
  6. Step 6: Final answer
    x = 96,906.42

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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.