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Finding the Fourth Proportional to 199,172.40, 299,104.20 and 105,860.40

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Solution

The fourth proportional to 199,172.40, 299,104.20 and 105,860.40 is: 158,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,172.40 : 299,104.20 = 105,860.40 : x
  2. Step 2: Convert to fraction form
    199,172.40/299,104.20 = 105,860.40/x
  3. Step 3: Cross multiply
    199,172.40x = 299,104.20 × 105,860.40
  4. Step 4: Simplify right side
    199,172.40x = 31,663,290,253.68
  5. Step 5: Solve for x
    x = 31,663,290,253.68/199,172.40
  6. Step 6: Final answer
    x = 158,974.29

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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.