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Finding the Fourth Proportional to 119,690.71, 179,474.87 and 39,699.80

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Solution

The fourth proportional to 119,690.71, 179,474.87 and 39,699.80 is: 59,529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,690.71 : 179,474.87 = 39,699.80 : x
  2. Step 2: Convert to fraction form
    119,690.71/179,474.87 = 39,699.80/x
  3. Step 3: Cross multiply
    119,690.71x = 179,474.87 × 39,699.80
  4. Step 4: Simplify right side
    119,690.71x = 7,125,116,991.96
  5. Step 5: Solve for x
    x = 7,125,116,991.96/119,690.71
  6. Step 6: Final answer
    x = 59,529.41

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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.