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Finding the Fourth Proportional to 131,801.88, 181,889.10 and 72,185.88

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Solution

The fourth proportional to 131,801.88, 181,889.10 and 72,185.88 is: 99,617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,801.88 : 181,889.10 = 72,185.88 : x
  2. Step 2: Convert to fraction form
    131,801.88/181,889.10 = 72,185.88/x
  3. Step 3: Cross multiply
    131,801.88x = 181,889.10 × 72,185.88
  4. Step 4: Simplify right side
    131,801.88x = 13,129,824,745.91
  5. Step 5: Solve for x
    x = 13,129,824,745.91/131,801.88
  6. Step 6: Final answer
    x = 99,617.89

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1.5x scale

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.