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Finding the Fourth Proportional to 144,808.49, 216,975.51 and 139,272.75

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Solution

The fourth proportional to 144,808.49, 216,975.51 and 139,272.75 is: 208,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,808.49 : 216,975.51 = 139,272.75 : x
  2. Step 2: Convert to fraction form
    144,808.49/216,975.51 = 139,272.75/x
  3. Step 3: Cross multiply
    144,808.49x = 216,975.51 × 139,272.75
  4. Step 4: Simplify right side
    144,808.49x = 30,218,775,960.35
  5. Step 5: Solve for x
    x = 30,218,775,960.35/144,808.49
  6. Step 6: Final answer
    x = 208,680.97

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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.