Home / 121,715.43-167,970.72-68,006.36

Finding the Fourth Proportional to 121,715.43, 167,970.72 and 68,006.36

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Solution

The fourth proportional to 121,715.43, 167,970.72 and 68,006.36 is: 93,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,715.43 : 167,970.72 = 68,006.36 : x
  2. Step 2: Convert to fraction form
    121,715.43/167,970.72 = 68,006.36/x
  3. Step 3: Cross multiply
    121,715.43x = 167,970.72 × 68,006.36
  4. Step 4: Simplify right side
    121,715.43x = 11,423,076,413.93
  5. Step 5: Solve for x
    x = 11,423,076,413.93/121,715.43
  6. Step 6: Final answer
    x = 93,850.68

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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.