Home / 128,823.20-193,037.74-68,860.21

Finding the Fourth Proportional to 128,823.20, 193,037.74 and 68,860.21

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Solution

The fourth proportional to 128,823.20, 193,037.74 and 68,860.21 is: 103,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,823.20 : 193,037.74 = 68,860.21 : x
  2. Step 2: Convert to fraction form
    128,823.20/193,037.74 = 68,860.21/x
  3. Step 3: Cross multiply
    128,823.20x = 193,037.74 × 68,860.21
  4. Step 4: Simplify right side
    128,823.20x = 13,292,619,021.53
  5. Step 5: Solve for x
    x = 13,292,619,021.53/128,823.20
  6. Step 6: Final answer
    x = 103,184.97

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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.