Home / 140,090.10-193,323.42-79,660.76

Finding the Fourth Proportional to 140,090.10, 193,323.42 and 79,660.76

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Solution

The fourth proportional to 140,090.10, 193,323.42 and 79,660.76 is: 109,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,090.10 : 193,323.42 = 79,660.76 : x
  2. Step 2: Convert to fraction form
    140,090.10/193,323.42 = 79,660.76/x
  3. Step 3: Cross multiply
    140,090.10x = 193,323.42 × 79,660.76
  4. Step 4: Simplify right side
    140,090.10x = 15,400,289,596.38
  5. Step 5: Solve for x
    x = 15,400,289,596.38/140,090.10
  6. Step 6: Final answer
    x = 109,931.32

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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.