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Finding the Fourth Proportional to 114,625.80, 171,987.30 and 72,538.20

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Solution

The fourth proportional to 114,625.80, 171,987.30 and 72,538.20 is: 108,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,625.80 : 171,987.30 = 72,538.20 : x
  2. Step 2: Convert to fraction form
    114,625.80/171,987.30 = 72,538.20/x
  3. Step 3: Cross multiply
    114,625.80x = 171,987.30 × 72,538.20
  4. Step 4: Simplify right side
    114,625.80x = 12,475,649,164.86
  5. Step 5: Solve for x
    x = 12,475,649,164.86/114,625.80
  6. Step 6: Final answer
    x = 108,838.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.