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Finding the Fourth Proportional to 144,169.21, 216,300.09 and 69,294.79

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Solution

The fourth proportional to 144,169.21, 216,300.09 and 69,294.79 is: 103,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,169.21 : 216,300.09 = 69,294.79 : x
  2. Step 2: Convert to fraction form
    144,169.21/216,300.09 = 69,294.79/x
  3. Step 3: Cross multiply
    144,169.21x = 216,300.09 × 69,294.79
  4. Step 4: Simplify right side
    144,169.21x = 14,988,468,237.29
  5. Step 5: Solve for x
    x = 14,988,468,237.29/144,169.21
  6. Step 6: Final answer
    x = 103,964.42

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1.5x scale

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.