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Finding the Fourth Proportional to 199,372.74, 299,109.54 and 66,253.68

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Solution

The fourth proportional to 199,372.74, 299,109.54 and 66,253.68 is: 99,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,372.74 : 299,109.54 = 66,253.68 : x
  2. Step 2: Convert to fraction form
    199,372.74/299,109.54 = 66,253.68/x
  3. Step 3: Cross multiply
    199,372.74x = 299,109.54 × 66,253.68
  4. Step 4: Simplify right side
    199,372.74x = 19,817,107,748.11
  5. Step 5: Solve for x
    x = 19,817,107,748.11/199,372.74
  6. Step 6: Final answer
    x = 99,397.28

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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.