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Finding the Fourth Proportional to 144,880.60, 217,320.90 and 74,021.80

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Solution

The fourth proportional to 144,880.60, 217,320.90 and 74,021.80 is: 111,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,880.60 : 217,320.90 = 74,021.80 : x
  2. Step 2: Convert to fraction form
    144,880.60/217,320.90 = 74,021.80/x
  3. Step 3: Cross multiply
    144,880.60x = 217,320.90 × 74,021.80
  4. Step 4: Simplify right side
    144,880.60x = 16,086,484,195.62
  5. Step 5: Solve for x
    x = 16,086,484,195.62/144,880.60
  6. Step 6: Final answer
    x = 111,032.70

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1.5x scale

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.