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Finding the Fourth Proportional to 169,320.20, 253,972.20 and 56,989.40

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Solution

The fourth proportional to 169,320.20, 253,972.20 and 56,989.40 is: 85,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,320.20 : 253,972.20 = 56,989.40 : x
  2. Step 2: Convert to fraction form
    169,320.20/253,972.20 = 56,989.40/x
  3. Step 3: Cross multiply
    169,320.20x = 253,972.20 × 56,989.40
  4. Step 4: Simplify right side
    169,320.20x = 14,473,723,294.68
  5. Step 5: Solve for x
    x = 14,473,723,294.68/169,320.20
  6. Step 6: Final answer
    x = 85,481.37

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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.