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Finding the Fourth Proportional to 187,366.84, 281,160.90 and 69,120.76

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Solution

The fourth proportional to 187,366.84, 281,160.90 and 69,120.76 is: 103,721.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,366.84 : 281,160.90 = 69,120.76 : x
  2. Step 2: Convert to fraction form
    187,366.84/281,160.90 = 69,120.76/x
  3. Step 3: Cross multiply
    187,366.84x = 281,160.90 × 69,120.76
  4. Step 4: Simplify right side
    187,366.84x = 19,434,055,090.28
  5. Step 5: Solve for x
    x = 19,434,055,090.28/187,366.84
  6. Step 6: Final answer
    x = 103,721.96

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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.