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Finding the Fourth Proportional to 144,783.08, 217,314.78 and 69,955.88

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Solution

The fourth proportional to 144,783.08, 217,314.78 and 69,955.88 is: 105,001.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,783.08 : 217,314.78 = 69,955.88 : x
  2. Step 2: Convert to fraction form
    144,783.08/217,314.78 = 69,955.88/x
  3. Step 3: Cross multiply
    144,783.08x = 217,314.78 × 69,955.88
  4. Step 4: Simplify right side
    144,783.08x = 15,202,446,671.91
  5. Step 5: Solve for x
    x = 15,202,446,671.91/144,783.08
  6. Step 6: Final answer
    x = 105,001.54

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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.