Home / 100,284.68-150,431.18-82,721.80

Finding the Fourth Proportional to 100,284.68, 150,431.18 and 82,721.80

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Solution

The fourth proportional to 100,284.68, 150,431.18 and 82,721.80 is: 124,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,284.68 : 150,431.18 = 82,721.80 : x
  2. Step 2: Convert to fraction form
    100,284.68/150,431.18 = 82,721.80/x
  3. Step 3: Cross multiply
    100,284.68x = 150,431.18 × 82,721.80
  4. Step 4: Simplify right side
    100,284.68x = 12,443,937,985.72
  5. Step 5: Solve for x
    x = 12,443,937,985.72/100,284.68
  6. Step 6: Final answer
    x = 124,086.13

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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.