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Finding the Fourth Proportional to 101,520.08, 140,011.92 and 76,086.08

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Solution

The fourth proportional to 101,520.08, 140,011.92 and 76,086.08 is: 104,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,520.08 : 140,011.92 = 76,086.08 : x
  2. Step 2: Convert to fraction form
    101,520.08/140,011.92 = 76,086.08/x
  3. Step 3: Cross multiply
    101,520.08x = 140,011.92 × 76,086.08
  4. Step 4: Simplify right side
    101,520.08x = 10,652,958,146.07
  5. Step 5: Solve for x
    x = 10,652,958,146.07/101,520.08
  6. Step 6: Final answer
    x = 104,934.49

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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.