Home / 90,765.94-136,048.02-68,507.14

Finding the Fourth Proportional to 90,765.94, 136,048.02 and 68,507.14

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Solution

The fourth proportional to 90,765.94, 136,048.02 and 68,507.14 is: 102,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,765.94 : 136,048.02 = 68,507.14 : x
  2. Step 2: Convert to fraction form
    90,765.94/136,048.02 = 68,507.14/x
  3. Step 3: Cross multiply
    90,765.94x = 136,048.02 × 68,507.14
  4. Step 4: Simplify right side
    90,765.94x = 9,320,260,752.86
  5. Step 5: Solve for x
    x = 9,320,260,752.86/90,765.94
  6. Step 6: Final answer
    x = 102,684.56

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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.