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Finding the Fourth Proportional to 140,018.91, 209,965.05 and 40,156.17

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Solution

The fourth proportional to 140,018.91, 209,965.05 and 40,156.17 is: 60,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,018.91 : 209,965.05 = 40,156.17 : x
  2. Step 2: Convert to fraction form
    140,018.91/209,965.05 = 40,156.17/x
  3. Step 3: Cross multiply
    140,018.91x = 209,965.05 × 40,156.17
  4. Step 4: Simplify right side
    140,018.91x = 8,431,392,241.86
  5. Step 5: Solve for x
    x = 8,431,392,241.86/140,018.91
  6. Step 6: Final answer
    x = 60,216.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.