Home / 185,101.28-255,438.60-100,218.08

Finding the Fourth Proportional to 185,101.28, 255,438.60 and 100,218.08

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Solution

The fourth proportional to 185,101.28, 255,438.60 and 100,218.08 is: 138,300.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,101.28 : 255,438.60 = 100,218.08 : x
  2. Step 2: Convert to fraction form
    185,101.28/255,438.60 = 100,218.08/x
  3. Step 3: Cross multiply
    185,101.28x = 255,438.60 × 100,218.08
  4. Step 4: Simplify right side
    185,101.28x = 25,599,566,049.89
  5. Step 5: Solve for x
    x = 25,599,566,049.89/185,101.28
  6. Step 6: Final answer
    x = 138,300.32

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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.