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Finding the Fourth Proportional to 119,870.99, 179,835.69 and 39,908.80

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Solution

The fourth proportional to 119,870.99, 179,835.69 and 39,908.80 is: 59,872.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,870.99 : 179,835.69 = 39,908.80 : x
  2. Step 2: Convert to fraction form
    119,870.99/179,835.69 = 39,908.80/x
  3. Step 3: Cross multiply
    119,870.99x = 179,835.69 × 39,908.80
  4. Step 4: Simplify right side
    119,870.99x = 7,177,026,959.52
  5. Step 5: Solve for x
    x = 7,177,026,959.52/119,870.99
  6. Step 6: Final answer
    x = 59,872.93

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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.