Home / 134,721.20-202,081.80-84,857.60

Finding the Fourth Proportional to 134,721.20, 202,081.80 and 84,857.60

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Solution

The fourth proportional to 134,721.20, 202,081.80 and 84,857.60 is: 127,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,721.20 : 202,081.80 = 84,857.60 : x
  2. Step 2: Convert to fraction form
    134,721.20/202,081.80 = 84,857.60/x
  3. Step 3: Cross multiply
    134,721.20x = 202,081.80 × 84,857.60
  4. Step 4: Simplify right side
    134,721.20x = 17,148,176,551.68
  5. Step 5: Solve for x
    x = 17,148,176,551.68/134,721.20
  6. Step 6: Final answer
    x = 127,286.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.