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Finding the Fourth Proportional to 131,910, 182,047.32 and 72,305.52

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Solution

The fourth proportional to 131,910, 182,047.32 and 72,305.52 is: 99,787.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,910 : 182,047.32 = 72,305.52 : x
  2. Step 2: Convert to fraction form
    131,910/182,047.32 = 72,305.52/x
  3. Step 3: Cross multiply
    131,910x = 182,047.32 × 72,305.52
  4. Step 4: Simplify right side
    131,910x = 13,163,026,137.21
  5. Step 5: Solve for x
    x = 13,163,026,137.21/131,910
  6. Step 6: Final answer
    x = 99,787.93

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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.