Home / 126,021.42-173,904.50-68,661.20

Finding the Fourth Proportional to 126,021.42, 173,904.50 and 68,661.20

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Solution

The fourth proportional to 126,021.42, 173,904.50 and 68,661.20 is: 94,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,021.42 : 173,904.50 = 68,661.20 : x
  2. Step 2: Convert to fraction form
    126,021.42/173,904.50 = 68,661.20/x
  3. Step 3: Cross multiply
    126,021.42x = 173,904.50 × 68,661.20
  4. Step 4: Simplify right side
    126,021.42x = 11,940,492,261.81
  5. Step 5: Solve for x
    x = 11,940,492,261.81/126,021.42
  6. Step 6: Final answer
    x = 94,749.70

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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.