Home / 135,274.52-186,645.28-87,470.36

Finding the Fourth Proportional to 135,274.52, 186,645.28 and 87,470.36

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Solution

The fourth proportional to 135,274.52, 186,645.28 and 87,470.36 is: 120,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,274.52 : 186,645.28 = 87,470.36 : x
  2. Step 2: Convert to fraction form
    135,274.52/186,645.28 = 87,470.36/x
  3. Step 3: Cross multiply
    135,274.52x = 186,645.28 × 87,470.36
  4. Step 4: Simplify right side
    135,274.52x = 16,325,929,833.90
  5. Step 5: Solve for x
    x = 16,325,929,833.90/135,274.52
  6. Step 6: Final answer
    x = 120,687.40

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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.