Home / 120,535.80-180,833.83-85,066.36

Finding the Fourth Proportional to 120,535.80, 180,833.83 and 85,066.36

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Solution

The fourth proportional to 120,535.80, 180,833.83 and 85,066.36 is: 127,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,535.80 : 180,833.83 = 85,066.36 : x
  2. Step 2: Convert to fraction form
    120,535.80/180,833.83 = 85,066.36/x
  3. Step 3: Cross multiply
    120,535.80x = 180,833.83 × 85,066.36
  4. Step 4: Simplify right side
    120,535.80x = 15,382,875,682.96
  5. Step 5: Solve for x
    x = 15,382,875,682.96/120,535.80
  6. Step 6: Final answer
    x = 127,620.80

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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.