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Finding the Fourth Proportional to 144,951.90, 217,427.85 and 70,107.90

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Solution

The fourth proportional to 144,951.90, 217,427.85 and 70,107.90 is: 105,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,951.90 : 217,427.85 = 70,107.90 : x
  2. Step 2: Convert to fraction form
    144,951.90/217,427.85 = 70,107.90/x
  3. Step 3: Cross multiply
    144,951.90x = 217,427.85 × 70,107.90
  4. Step 4: Simplify right side
    144,951.90x = 15,243,409,965.02
  5. Step 5: Solve for x
    x = 15,243,409,965.02/144,951.90
  6. Step 6: Final answer
    x = 105,161.85

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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.