Home / 101,818.90-140,517.76-56,505.44

Finding the Fourth Proportional to 101,818.90, 140,517.76 and 56,505.44

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Solution

The fourth proportional to 101,818.90, 140,517.76 and 56,505.44 is: 77,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,818.90 : 140,517.76 = 56,505.44 : x
  2. Step 2: Convert to fraction form
    101,818.90/140,517.76 = 56,505.44/x
  3. Step 3: Cross multiply
    101,818.90x = 140,517.76 × 56,505.44
  4. Step 4: Simplify right side
    101,818.90x = 7,940,017,856.61
  5. Step 5: Solve for x
    x = 7,940,017,856.61/101,818.90
  6. Step 6: Final answer
    x = 77,981.77

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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.