Home / 121,856.47-168,213.04-74,126.41

Finding the Fourth Proportional to 121,856.47, 168,213.04 and 74,126.41

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Solution

The fourth proportional to 121,856.47, 168,213.04 and 74,126.41 is: 102,325.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,856.47 : 168,213.04 = 74,126.41 : x
  2. Step 2: Convert to fraction form
    121,856.47/168,213.04 = 74,126.41/x
  3. Step 3: Cross multiply
    121,856.47x = 168,213.04 × 74,126.41
  4. Step 4: Simplify right side
    121,856.47x = 12,469,028,164.54
  5. Step 5: Solve for x
    x = 12,469,028,164.54/121,856.47
  6. Step 6: Final answer
    x = 102,325.53

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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.