Home / 140,022.12-193,242-79,611.72

Finding the Fourth Proportional to 140,022.12, 193,242 and 79,611.72

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Solution

The fourth proportional to 140,022.12, 193,242 and 79,611.72 is: 109,870.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,022.12 : 193,242 = 79,611.72 : x
  2. Step 2: Convert to fraction form
    140,022.12/193,242 = 79,611.72/x
  3. Step 3: Cross multiply
    140,022.12x = 193,242 × 79,611.72
  4. Step 4: Simplify right side
    140,022.12x = 15,384,327,996.24
  5. Step 5: Solve for x
    x = 15,384,327,996.24/140,022.12
  6. Step 6: Final answer
    x = 109,870.70

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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.