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Finding the Fourth Proportional to 139,611.06, 192,666.96 and 75,952.80

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Solution

The fourth proportional to 139,611.06, 192,666.96 and 75,952.80 is: 104,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,611.06 : 192,666.96 = 75,952.80 : x
  2. Step 2: Convert to fraction form
    139,611.06/192,666.96 = 75,952.80/x
  3. Step 3: Cross multiply
    139,611.06x = 192,666.96 × 75,952.80
  4. Step 4: Simplify right side
    139,611.06x = 14,633,595,079.49
  5. Step 5: Solve for x
    x = 14,633,595,079.49/139,611.06
  6. Step 6: Final answer
    x = 104,816.88

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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.