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Finding the Fourth Proportional to 118,373.78, 163,360.62 and 68,072.78

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Solution

The fourth proportional to 118,373.78, 163,360.62 and 68,072.78 is: 93,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,373.78 : 163,360.62 = 68,072.78 : x
  2. Step 2: Convert to fraction form
    118,373.78/163,360.62 = 68,072.78/x
  3. Step 3: Cross multiply
    118,373.78x = 163,360.62 × 68,072.78
  4. Step 4: Simplify right side
    118,373.78x = 11,120,411,545.92
  5. Step 5: Solve for x
    x = 11,120,411,545.92/118,373.78
  6. Step 6: Final answer
    x = 93,943.20

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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.