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Finding the Fourth Proportional to 107,993.83, 162,045.41 and 72,859.68

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Solution

The fourth proportional to 107,993.83, 162,045.41 and 72,859.68 is: 109,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,993.83 : 162,045.41 = 72,859.68 : x
  2. Step 2: Convert to fraction form
    107,993.83/162,045.41 = 72,859.68/x
  3. Step 3: Cross multiply
    107,993.83x = 162,045.41 × 72,859.68
  4. Step 4: Simplify right side
    107,993.83x = 11,806,576,718.07
  5. Step 5: Solve for x
    x = 11,806,576,718.07/107,993.83
  6. Step 6: Final answer
    x = 109,326.40

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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.