Home / 100,336.29-138,462.49-55,014.66

Finding the Fourth Proportional to 100,336.29, 138,462.49 and 55,014.66

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Solution

The fourth proportional to 100,336.29, 138,462.49 and 55,014.66 is: 75,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,336.29 : 138,462.49 = 55,014.66 : x
  2. Step 2: Convert to fraction form
    100,336.29/138,462.49 = 55,014.66/x
  3. Step 3: Cross multiply
    100,336.29x = 138,462.49 × 55,014.66
  4. Step 4: Simplify right side
    100,336.29x = 7,617,466,878.87
  5. Step 5: Solve for x
    x = 7,617,466,878.87/100,336.29
  6. Step 6: Final answer
    x = 75,919.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.