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Finding the Fourth Proportional to 113,318.80, 169,994.40 and 38,442.40

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Solution

The fourth proportional to 113,318.80, 169,994.40 and 38,442.40 is: 57,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,318.80 : 169,994.40 = 38,442.40 : x
  2. Step 2: Convert to fraction form
    113,318.80/169,994.40 = 38,442.40/x
  3. Step 3: Cross multiply
    113,318.80x = 169,994.40 × 38,442.40
  4. Step 4: Simplify right side
    113,318.80x = 6,534,992,722.56
  5. Step 5: Solve for x
    x = 6,534,992,722.56/113,318.80
  6. Step 6: Final answer
    x = 57,669.10

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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.