Home / 120,639.26-181,017.78-85,327.46

Finding the Fourth Proportional to 120,639.26, 181,017.78 and 85,327.46

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Solution

The fourth proportional to 120,639.26, 181,017.78 and 85,327.46 is: 128,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639.26 : 181,017.78 = 85,327.46 : x
  2. Step 2: Convert to fraction form
    120,639.26/181,017.78 = 85,327.46/x
  3. Step 3: Cross multiply
    120,639.26x = 181,017.78 × 85,327.46
  4. Step 4: Simplify right side
    120,639.26x = 15,445,787,382.24
  5. Step 5: Solve for x
    x = 15,445,787,382.24/120,639.26
  6. Step 6: Final answer
    x = 128,032.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.