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Finding the Fourth Proportional to 139,177.76, 208,504.16 and 107,859.92

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Solution

The fourth proportional to 139,177.76, 208,504.16 and 107,859.92 is: 161,586.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,177.76 : 208,504.16 = 107,859.92 : x
  2. Step 2: Convert to fraction form
    139,177.76/208,504.16 = 107,859.92/x
  3. Step 3: Cross multiply
    139,177.76x = 208,504.16 × 107,859.92
  4. Step 4: Simplify right side
    139,177.76x = 22,489,242,017.27
  5. Step 5: Solve for x
    x = 22,489,242,017.27/139,177.76
  6. Step 6: Final answer
    x = 161,586.46

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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.