Home / 139,305.12-208,987.68-43,240.33

Finding the Fourth Proportional to 139,305.12, 208,987.68 and 43,240.33

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Solution

The fourth proportional to 139,305.12, 208,987.68 and 43,240.33 is: 64,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,305.12 : 208,987.68 = 43,240.33 : x
  2. Step 2: Convert to fraction form
    139,305.12/208,987.68 = 43,240.33/x
  3. Step 3: Cross multiply
    139,305.12x = 208,987.68 × 43,240.33
  4. Step 4: Simplify right side
    139,305.12x = 9,036,696,032.93
  5. Step 5: Solve for x
    x = 9,036,696,032.93/139,305.12
  6. Step 6: Final answer
    x = 64,869.81

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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.