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Finding the Fourth Proportional to 144,170.21, 216,301.59 and 69,295.79

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Solution

The fourth proportional to 144,170.21, 216,301.59 and 69,295.79 is: 103,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,170.21 : 216,301.59 = 69,295.79 : x
  2. Step 2: Convert to fraction form
    144,170.21/216,301.59 = 69,295.79/x
  3. Step 3: Cross multiply
    144,170.21x = 216,301.59 × 69,295.79
  4. Step 4: Simplify right side
    144,170.21x = 14,988,789,557.31
  5. Step 5: Solve for x
    x = 14,988,789,557.31/144,170.21
  6. Step 6: Final answer
    x = 103,965.93

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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.