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Finding the Fourth Proportional to 119,994.78, 179,990.28 and 31,246.32

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Solution

The fourth proportional to 119,994.78, 179,990.28 and 31,246.32 is: 46,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,994.78 : 179,990.28 = 31,246.32 : x
  2. Step 2: Convert to fraction form
    119,994.78/179,990.28 = 31,246.32/x
  3. Step 3: Cross multiply
    119,994.78x = 179,990.28 × 31,246.32
  4. Step 4: Simplify right side
    119,994.78x = 5,624,033,885.77
  5. Step 5: Solve for x
    x = 5,624,033,885.77/119,994.78
  6. Step 6: Final answer
    x = 46,868.99

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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.