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Finding the Fourth Proportional to 126,806.40, 174,967.20 and 70,207.20

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Solution

The fourth proportional to 126,806.40, 174,967.20 and 70,207.20 is: 96,871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,806.40 : 174,967.20 = 70,207.20 : x
  2. Step 2: Convert to fraction form
    126,806.40/174,967.20 = 70,207.20/x
  3. Step 3: Cross multiply
    126,806.40x = 174,967.20 × 70,207.20
  4. Step 4: Simplify right side
    126,806.40x = 12,283,957,203.84
  5. Step 5: Solve for x
    x = 12,283,957,203.84/126,806.40
  6. Step 6: Final answer
    x = 96,871.74

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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.