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Finding the Fourth Proportional to 113,529.81, 156,671.15 and 63,228.81

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Solution

The fourth proportional to 113,529.81, 156,671.15 and 63,228.81 is: 87,255.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,529.81 : 156,671.15 = 63,228.81 : x
  2. Step 2: Convert to fraction form
    113,529.81/156,671.15 = 63,228.81/x
  3. Step 3: Cross multiply
    113,529.81x = 156,671.15 × 63,228.81
  4. Step 4: Simplify right side
    113,529.81x = 9,906,130,375.83
  5. Step 5: Solve for x
    x = 9,906,130,375.83/113,529.81
  6. Step 6: Final answer
    x = 87,255.76

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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.