Home / 140,385.79-193,732.41-76,723.57

Finding the Fourth Proportional to 140,385.79, 193,732.41 and 76,723.57

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Solution

The fourth proportional to 140,385.79, 193,732.41 and 76,723.57 is: 105,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,385.79 : 193,732.41 = 76,723.57 : x
  2. Step 2: Convert to fraction form
    140,385.79/193,732.41 = 76,723.57/x
  3. Step 3: Cross multiply
    140,385.79x = 193,732.41 × 76,723.57
  4. Step 4: Simplify right side
    140,385.79x = 14,863,842,119.90
  5. Step 5: Solve for x
    x = 14,863,842,119.90/140,385.79
  6. Step 6: Final answer
    x = 105,878.54

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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.