Home / 140,920.78-194,465.52-77,257.18

Finding the Fourth Proportional to 140,920.78, 194,465.52 and 77,257.18

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Solution

The fourth proportional to 140,920.78, 194,465.52 and 77,257.18 is: 106,612.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,920.78 : 194,465.52 = 77,257.18 : x
  2. Step 2: Convert to fraction form
    140,920.78/194,465.52 = 77,257.18/x
  3. Step 3: Cross multiply
    140,920.78x = 194,465.52 × 77,257.18
  4. Step 4: Simplify right side
    140,920.78x = 15,023,857,682.43
  5. Step 5: Solve for x
    x = 15,023,857,682.43/140,920.78
  6. Step 6: Final answer
    x = 106,612.08

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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.