Home / 90,081.38-135,121.80-63,317.18

Finding the Fourth Proportional to 90,081.38, 135,121.80 and 63,317.18

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Solution

The fourth proportional to 90,081.38, 135,121.80 and 63,317.18 is: 94,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,081.38 : 135,121.80 = 63,317.18 : x
  2. Step 2: Convert to fraction form
    90,081.38/135,121.80 = 63,317.18/x
  3. Step 3: Cross multiply
    90,081.38x = 135,121.80 × 63,317.18
  4. Step 4: Simplify right side
    90,081.38x = 8,555,531,332.52
  5. Step 5: Solve for x
    x = 8,555,531,332.52/90,081.38
  6. Step 6: Final answer
    x = 94,975.58

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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.