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Finding the Fourth Proportional to 199,611.60, 299,532.60 and 74,965.20

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Solution

The fourth proportional to 199,611.60, 299,532.60 and 74,965.20 is: 112,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,611.60 : 299,532.60 = 74,965.20 : x
  2. Step 2: Convert to fraction form
    199,611.60/299,532.60 = 74,965.20/x
  3. Step 3: Cross multiply
    199,611.60x = 299,532.60 × 74,965.20
  4. Step 4: Simplify right side
    199,611.60x = 22,454,521,265.52
  5. Step 5: Solve for x
    x = 22,454,521,265.52/199,611.60
  6. Step 6: Final answer
    x = 112,491.06

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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.