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Finding the Fourth Proportional to 199,420.95, 299,126.57 and 81,062.94

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Solution

The fourth proportional to 199,420.95, 299,126.57 and 81,062.94 is: 121,592.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,420.95 : 299,126.57 = 81,062.94 : x
  2. Step 2: Convert to fraction form
    199,420.95/299,126.57 = 81,062.94/x
  3. Step 3: Cross multiply
    199,420.95x = 299,126.57 × 81,062.94
  4. Step 4: Simplify right side
    199,420.95x = 24,248,078,791.00
  5. Step 5: Solve for x
    x = 24,248,078,791.00/199,420.95
  6. Step 6: Final answer
    x = 121,592.43

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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.