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Finding the Fourth Proportional to 136,103.87, 187,822.35 and 75,674.04

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Solution

The fourth proportional to 136,103.87, 187,822.35 and 75,674.04 is: 104,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,103.87 : 187,822.35 = 75,674.04 : x
  2. Step 2: Convert to fraction form
    136,103.87/187,822.35 = 75,674.04/x
  3. Step 3: Cross multiply
    136,103.87x = 187,822.35 × 75,674.04
  4. Step 4: Simplify right side
    136,103.87x = 14,213,276,026.79
  5. Step 5: Solve for x
    x = 14,213,276,026.79/136,103.87
  6. Step 6: Final answer
    x = 104,429.63

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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.