Home / 140,247.23-193,557.77-78,995.42

Finding the Fourth Proportional to 140,247.23, 193,557.77 and 78,995.42

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Solution

The fourth proportional to 140,247.23, 193,557.77 and 78,995.42 is: 109,023.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,247.23 : 193,557.77 = 78,995.42 : x
  2. Step 2: Convert to fraction form
    140,247.23/193,557.77 = 78,995.42/x
  3. Step 3: Cross multiply
    140,247.23x = 193,557.77 × 78,995.42
  4. Step 4: Simplify right side
    140,247.23x = 15,290,176,940.44
  5. Step 5: Solve for x
    x = 15,290,176,940.44/140,247.23
  6. Step 6: Final answer
    x = 109,023.02

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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.