Home / 108,979.32-150,387.66-66,608.76

Finding the Fourth Proportional to 108,979.32, 150,387.66 and 66,608.76

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Solution

The fourth proportional to 108,979.32, 150,387.66 and 66,608.76 is: 91,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,979.32 : 150,387.66 = 66,608.76 : x
  2. Step 2: Convert to fraction form
    108,979.32/150,387.66 = 66,608.76/x
  3. Step 3: Cross multiply
    108,979.32x = 150,387.66 × 66,608.76
  4. Step 4: Simplify right side
    108,979.32x = 10,017,135,551.90
  5. Step 5: Solve for x
    x = 10,017,135,551.90/108,979.32
  6. Step 6: Final answer
    x = 91,917.77

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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.