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Finding the Fourth Proportional to 101,739.39, 140,401.16 and 56,414.73

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Solution

The fourth proportional to 101,739.39, 140,401.16 and 56,414.73 is: 77,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,739.39 : 140,401.16 = 56,414.73 : x
  2. Step 2: Convert to fraction form
    101,739.39/140,401.16 = 56,414.73/x
  3. Step 3: Cross multiply
    101,739.39x = 140,401.16 × 56,414.73
  4. Step 4: Simplify right side
    101,739.39x = 7,920,693,251.01
  5. Step 5: Solve for x
    x = 7,920,693,251.01/101,739.39
  6. Step 6: Final answer
    x = 77,852.77

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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.