Home / 123,825.24-170,919.45-72,835.74

Finding the Fourth Proportional to 123,825.24, 170,919.45 and 72,835.74

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Solution

The fourth proportional to 123,825.24, 170,919.45 and 72,835.74 is: 100,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,825.24 : 170,919.45 = 72,835.74 : x
  2. Step 2: Convert to fraction form
    123,825.24/170,919.45 = 72,835.74/x
  3. Step 3: Cross multiply
    123,825.24x = 170,919.45 × 72,835.74
  4. Step 4: Simplify right side
    123,825.24x = 12,449,044,621.14
  5. Step 5: Solve for x
    x = 12,449,044,621.14/123,825.24
  6. Step 6: Final answer
    x = 100,537.21

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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.