Home / 126,142.42-173,895.66-99,238.21

Finding the Fourth Proportional to 126,142.42, 173,895.66 and 99,238.21

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Solution

The fourth proportional to 126,142.42, 173,895.66 and 99,238.21 is: 136,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,142.42 : 173,895.66 = 99,238.21 : x
  2. Step 2: Convert to fraction form
    126,142.42/173,895.66 = 99,238.21/x
  3. Step 3: Cross multiply
    126,142.42x = 173,895.66 × 99,238.21
  4. Step 4: Simplify right side
    126,142.42x = 17,257,094,025.17
  5. Step 5: Solve for x
    x = 17,257,094,025.17/126,142.42
  6. Step 6: Final answer
    x = 136,806.43

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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.