Home / 136,153.11-187,893.70-75,723.78

Finding the Fourth Proportional to 136,153.11, 187,893.70 and 75,723.78

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Solution

The fourth proportional to 136,153.11, 187,893.70 and 75,723.78 is: 104,500.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,153.11 : 187,893.70 = 75,723.78 : x
  2. Step 2: Convert to fraction form
    136,153.11/187,893.70 = 75,723.78/x
  3. Step 3: Cross multiply
    136,153.11x = 187,893.70 × 75,723.78
  4. Step 4: Simplify right side
    136,153.11x = 14,228,021,202.19
  5. Step 5: Solve for x
    x = 14,228,021,202.19/136,153.11
  6. Step 6: Final answer
    x = 104,500.16

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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.