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Finding the Fourth Proportional to 133,156.32, 183,751.56 and 72,726

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Solution

The fourth proportional to 133,156.32, 183,751.56 and 72,726 is: 100,359.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,156.32 : 183,751.56 = 72,726 : x
  2. Step 2: Convert to fraction form
    133,156.32/183,751.56 = 72,726/x
  3. Step 3: Cross multiply
    133,156.32x = 183,751.56 × 72,726
  4. Step 4: Simplify right side
    133,156.32x = 13,363,515,952.56
  5. Step 5: Solve for x
    x = 13,363,515,952.56/133,156.32
  6. Step 6: Final answer
    x = 100,359.61

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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.