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Finding the Fourth Proportional to 101,887.12, 140,604.72 and 63,668.86

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Solution

The fourth proportional to 101,887.12, 140,604.72 and 63,668.86 is: 87,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,887.12 : 140,604.72 = 63,668.86 : x
  2. Step 2: Convert to fraction form
    101,887.12/140,604.72 = 63,668.86/x
  3. Step 3: Cross multiply
    101,887.12x = 140,604.72 × 63,668.86
  4. Step 4: Simplify right side
    101,887.12x = 8,952,142,233.02
  5. Step 5: Solve for x
    x = 8,952,142,233.02/101,887.12
  6. Step 6: Final answer
    x = 87,863.34

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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.