Home / 111,535.20-167,155.12-81,813.86

Finding the Fourth Proportional to 111,535.20, 167,155.12 and 81,813.86

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Solution

The fourth proportional to 111,535.20, 167,155.12 and 81,813.86 is: 122,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,535.20 : 167,155.12 = 81,813.86 : x
  2. Step 2: Convert to fraction form
    111,535.20/167,155.12 = 81,813.86/x
  3. Step 3: Cross multiply
    111,535.20x = 167,155.12 × 81,813.86
  4. Step 4: Simplify right side
    111,535.20x = 13,675,605,585.96
  5. Step 5: Solve for x
    x = 13,675,605,585.96/111,535.20
  6. Step 6: Final answer
    x = 122,612.46

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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.