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Finding the Fourth Proportional to 101,228.44, 139,695.26 and 58,789.71

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Solution

The fourth proportional to 101,228.44, 139,695.26 and 58,789.71 is: 81,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,228.44 : 139,695.26 = 58,789.71 : x
  2. Step 2: Convert to fraction form
    101,228.44/139,695.26 = 58,789.71/x
  3. Step 3: Cross multiply
    101,228.44x = 139,695.26 × 58,789.71
  4. Step 4: Simplify right side
    101,228.44x = 8,212,643,823.77
  5. Step 5: Solve for x
    x = 8,212,643,823.77/101,228.44
  6. Step 6: Final answer
    x = 81,129.81

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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.