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Finding the Fourth Proportional to 101,960.38, 140,700.57 and 56,641.30

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Solution

The fourth proportional to 101,960.38, 140,700.57 and 56,641.30 is: 78,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,960.38 : 140,700.57 = 56,641.30 : x
  2. Step 2: Convert to fraction form
    101,960.38/140,700.57 = 56,641.30/x
  3. Step 3: Cross multiply
    101,960.38x = 140,700.57 × 56,641.30
  4. Step 4: Simplify right side
    101,960.38x = 7,969,463,195.54
  5. Step 5: Solve for x
    x = 7,969,463,195.54/101,960.38
  6. Step 6: Final answer
    x = 78,162.35

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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.