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Finding the Fourth Proportional to 119,994.40, 179,991.60 and 64,007.20

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Solution

The fourth proportional to 119,994.40, 179,991.60 and 64,007.20 is: 96,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,994.40 : 179,991.60 = 64,007.20 : x
  2. Step 2: Convert to fraction form
    119,994.40/179,991.60 = 64,007.20/x
  3. Step 3: Cross multiply
    119,994.40x = 179,991.60 × 64,007.20
  4. Step 4: Simplify right side
    119,994.40x = 11,520,758,339.52
  5. Step 5: Solve for x
    x = 11,520,758,339.52/119,994.40
  6. Step 6: Final answer
    x = 96,010.80

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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.