Home / 121,928.67-168,319.10-91,725.52

Finding the Fourth Proportional to 121,928.67, 168,319.10 and 91,725.52

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Solution

The fourth proportional to 121,928.67, 168,319.10 and 91,725.52 is: 126,624.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928.67 : 168,319.10 = 91,725.52 : x
  2. Step 2: Convert to fraction form
    121,928.67/168,319.10 = 91,725.52/x
  3. Step 3: Cross multiply
    121,928.67x = 168,319.10 × 91,725.52
  4. Step 4: Simplify right side
    121,928.67x = 15,439,156,973.43
  5. Step 5: Solve for x
    x = 15,439,156,973.43/121,928.67
  6. Step 6: Final answer
    x = 126,624.50

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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.