Home / 121,928.32-168,318.61-91,725.14

Finding the Fourth Proportional to 121,928.32, 168,318.61 and 91,725.14

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Solution

The fourth proportional to 121,928.32, 168,318.61 and 91,725.14 is: 126,623.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928.32 : 168,318.61 = 91,725.14 : x
  2. Step 2: Convert to fraction form
    121,928.32/168,318.61 = 91,725.14/x
  3. Step 3: Cross multiply
    121,928.32x = 168,318.61 × 91,725.14
  4. Step 4: Simplify right side
    121,928.32x = 15,439,047,608.23
  5. Step 5: Solve for x
    x = 15,439,047,608.23/121,928.32
  6. Step 6: Final answer
    x = 126,623.97

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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.