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Finding the Fourth Proportional to 144,942.40, 217,429.80 and 45,101.80

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Solution

The fourth proportional to 144,942.40, 217,429.80 and 45,101.80 is: 67,657.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,942.40 : 217,429.80 = 45,101.80 : x
  2. Step 2: Convert to fraction form
    144,942.40/217,429.80 = 45,101.80/x
  3. Step 3: Cross multiply
    144,942.40x = 217,429.80 × 45,101.80
  4. Step 4: Simplify right side
    144,942.40x = 9,806,475,353.64
  5. Step 5: Solve for x
    x = 9,806,475,353.64/144,942.40
  6. Step 6: Final answer
    x = 67,657.74

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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.