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Finding the Fourth Proportional to 119,339.72, 179,009.98 and 40,509.70

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Solution

The fourth proportional to 119,339.72, 179,009.98 and 40,509.70 is: 60,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,339.72 : 179,009.98 = 40,509.70 : x
  2. Step 2: Convert to fraction form
    119,339.72/179,009.98 = 40,509.70/x
  3. Step 3: Cross multiply
    119,339.72x = 179,009.98 × 40,509.70
  4. Step 4: Simplify right side
    119,339.72x = 7,251,640,586.81
  5. Step 5: Solve for x
    x = 7,251,640,586.81/119,339.72
  6. Step 6: Final answer
    x = 60,764.69

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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.