Home / 140,037.31-193,218.27-79,603.21

Finding the Fourth Proportional to 140,037.31, 193,218.27 and 79,603.21

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Solution

The fourth proportional to 140,037.31, 193,218.27 and 79,603.21 is: 109,833.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,037.31 : 193,218.27 = 79,603.21 : x
  2. Step 2: Convert to fraction form
    140,037.31/193,218.27 = 79,603.21/x
  3. Step 3: Cross multiply
    140,037.31x = 193,218.27 × 79,603.21
  4. Step 4: Simplify right side
    140,037.31x = 15,380,794,522.65
  5. Step 5: Solve for x
    x = 15,380,794,522.65/140,037.31
  6. Step 6: Final answer
    x = 109,833.55

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1.5x scale

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.