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Finding the Fourth Proportional to 100,283.68, 150,429.68 and 82,720.80

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Solution

The fourth proportional to 100,283.68, 150,429.68 and 82,720.80 is: 124,084.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,283.68 : 150,429.68 = 82,720.80 : x
  2. Step 2: Convert to fraction form
    100,283.68/150,429.68 = 82,720.80/x
  3. Step 3: Cross multiply
    100,283.68x = 150,429.68 × 82,720.80
  4. Step 4: Simplify right side
    100,283.68x = 12,443,663,473.34
  5. Step 5: Solve for x
    x = 12,443,663,473.34/100,283.68
  6. Step 6: Final answer
    x = 124,084.63

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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.