Home / 109,131.84-150,473.12-74,693.18

Finding the Fourth Proportional to 109,131.84, 150,473.12 and 74,693.18

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Solution

The fourth proportional to 109,131.84, 150,473.12 and 74,693.18 is: 102,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,131.84 : 150,473.12 = 74,693.18 : x
  2. Step 2: Convert to fraction form
    109,131.84/150,473.12 = 74,693.18/x
  3. Step 3: Cross multiply
    109,131.84x = 150,473.12 × 74,693.18
  4. Step 4: Simplify right side
    109,131.84x = 11,239,315,626.91
  5. Step 5: Solve for x
    x = 11,239,315,626.91/109,131.84
  6. Step 6: Final answer
    x = 102,988.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.