Home / 138,904.16-208,362-40,408.16

Finding the Fourth Proportional to 138,904.16, 208,362 and 40,408.16

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Solution

The fourth proportional to 138,904.16, 208,362 and 40,408.16 is: 60,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,904.16 : 208,362 = 40,408.16 : x
  2. Step 2: Convert to fraction form
    138,904.16/208,362 = 40,408.16/x
  3. Step 3: Cross multiply
    138,904.16x = 208,362 × 40,408.16
  4. Step 4: Simplify right side
    138,904.16x = 8,419,525,033.92
  5. Step 5: Solve for x
    x = 8,419,525,033.92/138,904.16
  6. Step 6: Final answer
    x = 60,613.92

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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.