Home / 168,139.08-252,268.86-72,036

Finding the Fourth Proportional to 168,139.08, 252,268.86 and 72,036

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Solution

The fourth proportional to 168,139.08, 252,268.86 and 72,036 is: 108,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,139.08 : 252,268.86 = 72,036 : x
  2. Step 2: Convert to fraction form
    168,139.08/252,268.86 = 72,036/x
  3. Step 3: Cross multiply
    168,139.08x = 252,268.86 × 72,036
  4. Step 4: Simplify right side
    168,139.08x = 18,172,439,598.96
  5. Step 5: Solve for x
    x = 18,172,439,598.96/168,139.08
  6. Step 6: Final answer
    x = 108,079.81

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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.