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Finding the Fourth Proportional to 118,701.36, 163,823.04 and 68,400.72

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Solution

The fourth proportional to 118,701.36, 163,823.04 and 68,400.72 is: 94,401.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.36 : 163,823.04 = 68,400.72 : x
  2. Step 2: Convert to fraction form
    118,701.36/163,823.04 = 68,400.72/x
  3. Step 3: Cross multiply
    118,701.36x = 163,823.04 × 68,400.72
  4. Step 4: Simplify right side
    118,701.36x = 11,205,613,888.59
  5. Step 5: Solve for x
    x = 11,205,613,888.59/118,701.36
  6. Step 6: Final answer
    x = 94,401.73

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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.