Home / 121,261.32-180,943.62-108,652.90

Finding the Fourth Proportional to 121,261.32, 180,943.62 and 108,652.90

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Solution

The fourth proportional to 121,261.32, 180,943.62 and 108,652.90 is: 162,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,261.32 : 180,943.62 = 108,652.90 : x
  2. Step 2: Convert to fraction form
    121,261.32/180,943.62 = 108,652.90/x
  3. Step 3: Cross multiply
    121,261.32x = 180,943.62 × 108,652.90
  4. Step 4: Simplify right side
    121,261.32x = 19,660,049,049.50
  5. Step 5: Solve for x
    x = 19,660,049,049.50/121,261.32
  6. Step 6: Final answer
    x = 162,129.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.