Home / 100,610.27-138,845.40-55,292.45

Finding the Fourth Proportional to 100,610.27, 138,845.40 and 55,292.45

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Solution

The fourth proportional to 100,610.27, 138,845.40 and 55,292.45 is: 76,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,610.27 : 138,845.40 = 55,292.45 : x
  2. Step 2: Convert to fraction form
    100,610.27/138,845.40 = 55,292.45/x
  3. Step 3: Cross multiply
    100,610.27x = 138,845.40 × 55,292.45
  4. Step 4: Simplify right side
    100,610.27x = 7,677,101,850.35
  5. Step 5: Solve for x
    x = 7,677,101,850.35/100,610.27
  6. Step 6: Final answer
    x = 76,305.35

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1.5x scale

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.