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Finding the Fourth Proportional to 105,791.79, 145,997.24 and 63,342.21

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Solution

The fourth proportional to 105,791.79, 145,997.24 and 63,342.21 is: 87,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,791.79 : 145,997.24 = 63,342.21 : x
  2. Step 2: Convert to fraction form
    105,791.79/145,997.24 = 63,342.21/x
  3. Step 3: Cross multiply
    105,791.79x = 145,997.24 × 63,342.21
  4. Step 4: Simplify right side
    105,791.79x = 9,247,787,518.79
  5. Step 5: Solve for x
    x = 9,247,787,518.79/105,791.79
  6. Step 6: Final answer
    x = 87,414.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.