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Finding the Fourth Proportional to 199,579.12, 299,416.52 and 66,460.52

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Solution

The fourth proportional to 199,579.12, 299,416.52 and 66,460.52 is: 99,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,579.12 : 299,416.52 = 66,460.52 : x
  2. Step 2: Convert to fraction form
    199,579.12/299,416.52 = 66,460.52/x
  3. Step 3: Cross multiply
    199,579.12x = 299,416.52 × 66,460.52
  4. Step 4: Simplify right side
    199,579.12x = 19,899,377,615.79
  5. Step 5: Solve for x
    x = 19,899,377,615.79/199,579.12
  6. Step 6: Final answer
    x = 99,706.71

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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.