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Finding the Fourth Proportional to 199,470.48, 299,131.08 and 85,603.92

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Solution

The fourth proportional to 199,470.48, 299,131.08 and 85,603.92 is: 128,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,470.48 : 299,131.08 = 85,603.92 : x
  2. Step 2: Convert to fraction form
    199,470.48/299,131.08 = 85,603.92/x
  3. Step 3: Cross multiply
    199,470.48x = 299,131.08 × 85,603.92
  4. Step 4: Simplify right side
    199,470.48x = 25,606,793,041.83
  5. Step 5: Solve for x
    x = 25,606,793,041.83/199,470.48
  6. Step 6: Final answer
    x = 128,373.85

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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.