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Finding the Fourth Proportional to 144,648.96, 216,974.88 and 69,751.68

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Solution

The fourth proportional to 144,648.96, 216,974.88 and 69,751.68 is: 104,628.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,648.96 : 216,974.88 = 69,751.68 : x
  2. Step 2: Convert to fraction form
    144,648.96/216,974.88 = 69,751.68/x
  3. Step 3: Cross multiply
    144,648.96x = 216,974.88 × 69,751.68
  4. Step 4: Simplify right side
    144,648.96x = 15,134,362,397.80
  5. Step 5: Solve for x
    x = 15,134,362,397.80/144,648.96
  6. Step 6: Final answer
    x = 104,628.21

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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.