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Finding the Fourth Proportional to 144,709.79, 216,948.77 and 68,770.22

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Solution

The fourth proportional to 144,709.79, 216,948.77 and 68,770.22 is: 103,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,709.79 : 216,948.77 = 68,770.22 : x
  2. Step 2: Convert to fraction form
    144,709.79/216,948.77 = 68,770.22/x
  3. Step 3: Cross multiply
    144,709.79x = 216,948.77 × 68,770.22
  4. Step 4: Simplify right side
    144,709.79x = 14,919,615,269.96
  5. Step 5: Solve for x
    x = 14,919,615,269.96/144,709.79
  6. Step 6: Final answer
    x = 103,100.25

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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.