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Finding the Fourth Proportional to 144,693.78, 217,114.77 and 68,878.12

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Solution

The fourth proportional to 144,693.78, 217,114.77 and 68,878.12 is: 103,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,693.78 : 217,114.77 = 68,878.12 : x
  2. Step 2: Convert to fraction form
    144,693.78/217,114.77 = 68,878.12/x
  3. Step 3: Cross multiply
    144,693.78x = 217,114.77 × 68,878.12
  4. Step 4: Simplify right side
    144,693.78x = 14,954,457,430.76
  5. Step 5: Solve for x
    x = 14,954,457,430.76/144,693.78
  6. Step 6: Final answer
    x = 103,352.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.