Home / 121,932.47-168,273.35-68,214.29

Finding the Fourth Proportional to 121,932.47, 168,273.35 and 68,214.29

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Solution

The fourth proportional to 121,932.47, 168,273.35 and 68,214.29 is: 94,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,932.47 : 168,273.35 = 68,214.29 : x
  2. Step 2: Convert to fraction form
    121,932.47/168,273.35 = 68,214.29/x
  3. Step 3: Cross multiply
    121,932.47x = 168,273.35 × 68,214.29
  4. Step 4: Simplify right side
    121,932.47x = 11,478,646,169.54
  5. Step 5: Solve for x
    x = 11,478,646,169.54/121,932.47
  6. Step 6: Final answer
    x = 94,139.37

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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.