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Finding the Fourth Proportional to 103,374.32, 154,760.22 and 76,837.85

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Solution

The fourth proportional to 103,374.32, 154,760.22 and 76,837.85 is: 115,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,374.32 : 154,760.22 = 76,837.85 : x
  2. Step 2: Convert to fraction form
    103,374.32/154,760.22 = 76,837.85/x
  3. Step 3: Cross multiply
    103,374.32x = 154,760.22 × 76,837.85
  4. Step 4: Simplify right side
    103,374.32x = 11,891,441,796.53
  5. Step 5: Solve for x
    x = 11,891,441,796.53/103,374.32
  6. Step 6: Final answer
    x = 115,032.85

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1.5x scale

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.