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Finding the Fourth Proportional to 187,347.81, 281,021.04 and 67,404.51

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Solution

The fourth proportional to 187,347.81, 281,021.04 and 67,404.51 is: 101,106.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,347.81 : 281,021.04 = 67,404.51 : x
  2. Step 2: Convert to fraction form
    187,347.81/281,021.04 = 67,404.51/x
  3. Step 3: Cross multiply
    187,347.81x = 281,021.04 × 67,404.51
  4. Step 4: Simplify right side
    187,347.81x = 18,942,085,500.89
  5. Step 5: Solve for x
    x = 18,942,085,500.89/187,347.81
  6. Step 6: Final answer
    x = 101,106.52

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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.