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Finding the Fourth Proportional to 101,232.65, 139,698.38 and 55,909.66

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Solution

The fourth proportional to 101,232.65, 139,698.38 and 55,909.66 is: 77,153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,232.65 : 139,698.38 = 55,909.66 : x
  2. Step 2: Convert to fraction form
    101,232.65/139,698.38 = 55,909.66/x
  3. Step 3: Cross multiply
    101,232.65x = 139,698.38 × 55,909.66
  4. Step 4: Simplify right side
    101,232.65x = 7,810,488,928.35
  5. Step 5: Solve for x
    x = 7,810,488,928.35/101,232.65
  6. Step 6: Final answer
    x = 77,153.85

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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.