Home / 90,967.82-136,471.18-68,790.02

Finding the Fourth Proportional to 90,967.82, 136,471.18 and 68,790.02

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Solution

The fourth proportional to 90,967.82, 136,471.18 and 68,790.02 is: 103,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,967.82 : 136,471.18 = 68,790.02 : x
  2. Step 2: Convert to fraction form
    90,967.82/136,471.18 = 68,790.02/x
  3. Step 3: Cross multiply
    90,967.82x = 136,471.18 × 68,790.02
  4. Step 4: Simplify right side
    90,967.82x = 9,387,855,201.62
  5. Step 5: Solve for x
    x = 9,387,855,201.62/90,967.82
  6. Step 6: Final answer
    x = 103,199.74

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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.