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Finding the Fourth Proportional to 120,252.72, 165,954.72 and 72,521.52

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Solution

The fourth proportional to 120,252.72, 165,954.72 and 72,521.52 is: 100,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,252.72 : 165,954.72 = 72,521.52 : x
  2. Step 2: Convert to fraction form
    120,252.72/165,954.72 = 72,521.52/x
  3. Step 3: Cross multiply
    120,252.72x = 165,954.72 × 72,521.52
  4. Step 4: Simplify right side
    120,252.72x = 12,035,288,545.57
  5. Step 5: Solve for x
    x = 12,035,288,545.57/120,252.72
  6. Step 6: Final answer
    x = 100,083.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.