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Finding the Fourth Proportional to 144,788.40, 217,175.40 and 74,674.80

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Solution

The fourth proportional to 144,788.40, 217,175.40 and 74,674.80 is: 112,008.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,788.40 : 217,175.40 = 74,674.80 : x
  2. Step 2: Convert to fraction form
    144,788.40/217,175.40 = 74,674.80/x
  3. Step 3: Cross multiply
    144,788.40x = 217,175.40 × 74,674.80
  4. Step 4: Simplify right side
    144,788.40x = 16,217,529,559.92
  5. Step 5: Solve for x
    x = 16,217,529,559.92/144,788.40
  6. Step 6: Final answer
    x = 112,008.49

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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.