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Finding the Fourth Proportional to 199,744.68, 299,618.16 and 66,624.55

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Solution

The fourth proportional to 199,744.68, 299,618.16 and 66,624.55 is: 99,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,744.68 : 299,618.16 = 66,624.55 : x
  2. Step 2: Convert to fraction form
    199,744.68/299,618.16 = 66,624.55/x
  3. Step 3: Cross multiply
    199,744.68x = 299,618.16 × 66,624.55
  4. Step 4: Simplify right side
    199,744.68x = 19,961,925,487.76
  5. Step 5: Solve for x
    x = 19,961,925,487.76/199,744.68
  6. Step 6: Final answer
    x = 99,937.21

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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.