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Finding the Fourth Proportional to 100,339.84, 150,479.04 and 69,374.08

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Solution

The fourth proportional to 100,339.84, 150,479.04 and 69,374.08 is: 104,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,339.84 : 150,479.04 = 69,374.08 : x
  2. Step 2: Convert to fraction form
    100,339.84/150,479.04 = 69,374.08/x
  3. Step 3: Cross multiply
    100,339.84x = 150,479.04 × 69,374.08
  4. Step 4: Simplify right side
    100,339.84x = 10,439,344,959.28
  5. Step 5: Solve for x
    x = 10,439,344,959.28/100,339.84
  6. Step 6: Final answer
    x = 104,039.88

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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.