Home / 90,332.82-135,248.94-68,078.88

Finding the Fourth Proportional to 90,332.82, 135,248.94 and 68,078.88

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Solution

The fourth proportional to 90,332.82, 135,248.94 and 68,078.88 is: 101,929.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.82 : 135,248.94 = 68,078.88 : x
  2. Step 2: Convert to fraction form
    90,332.82/135,248.94 = 68,078.88/x
  3. Step 3: Cross multiply
    90,332.82x = 135,248.94 × 68,078.88
  4. Step 4: Simplify right side
    90,332.82x = 9,207,596,356.39
  5. Step 5: Solve for x
    x = 9,207,596,356.39/90,332.82
  6. Step 6: Final answer
    x = 101,929.69

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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.