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Finding the Fourth Proportional to 135,470.54, 186,908.90 and 87,648.14

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Solution

The fourth proportional to 135,470.54, 186,908.90 and 87,648.14 is: 120,928.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,470.54 : 186,908.90 = 87,648.14 : x
  2. Step 2: Convert to fraction form
    135,470.54/186,908.90 = 87,648.14/x
  3. Step 3: Cross multiply
    135,470.54x = 186,908.90 × 87,648.14
  4. Step 4: Simplify right side
    135,470.54x = 16,382,217,434.45
  5. Step 5: Solve for x
    x = 16,382,217,434.45/135,470.54
  6. Step 6: Final answer
    x = 120,928.27

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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.