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Finding the Fourth Proportional to 192,638.16, 288,913.40 and 72,707.82

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Solution

The fourth proportional to 192,638.16, 288,913.40 and 72,707.82 is: 109,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,638.16 : 288,913.40 = 72,707.82 : x
  2. Step 2: Convert to fraction form
    192,638.16/288,913.40 = 72,707.82/x
  3. Step 3: Cross multiply
    192,638.16x = 288,913.40 × 72,707.82
  4. Step 4: Simplify right side
    192,638.16x = 21,006,263,119.25
  5. Step 5: Solve for x
    x = 21,006,263,119.25/192,638.16
  6. Step 6: Final answer
    x = 109,045.18

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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.