Home / 121,920.52-168,246.40-68,204.37

Finding the Fourth Proportional to 121,920.52, 168,246.40 and 68,204.37

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Solution

The fourth proportional to 121,920.52, 168,246.40 and 68,204.37 is: 94,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,920.52 : 168,246.40 = 68,204.37 : x
  2. Step 2: Convert to fraction form
    121,920.52/168,246.40 = 68,204.37/x
  3. Step 3: Cross multiply
    121,920.52x = 168,246.40 × 68,204.37
  4. Step 4: Simplify right side
    121,920.52x = 11,475,139,716.77
  5. Step 5: Solve for x
    x = 11,475,139,716.77/121,920.52
  6. Step 6: Final answer
    x = 94,119.84

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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.