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Finding the Fourth Proportional to 100,347.84, 150,491.04 and 69,382.08

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Solution

The fourth proportional to 100,347.84, 150,491.04 and 69,382.08 is: 104,051.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,347.84 : 150,491.04 = 69,382.08 : x
  2. Step 2: Convert to fraction form
    100,347.84/150,491.04 = 69,382.08/x
  3. Step 3: Cross multiply
    100,347.84x = 150,491.04 × 69,382.08
  4. Step 4: Simplify right side
    100,347.84x = 10,441,381,376.56
  5. Step 5: Solve for x
    x = 10,441,381,376.56/100,347.84
  6. Step 6: Final answer
    x = 104,051.88

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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.