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Finding the Fourth Proportional to 187,891.74, 281,811.69 and 103,807.26

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Solution

The fourth proportional to 187,891.74, 281,811.69 and 103,807.26 is: 155,696.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,891.74 : 281,811.69 = 103,807.26 : x
  2. Step 2: Convert to fraction form
    187,891.74/281,811.69 = 103,807.26/x
  3. Step 3: Cross multiply
    187,891.74x = 281,811.69 × 103,807.26
  4. Step 4: Simplify right side
    187,891.74x = 29,254,099,374.87
  5. Step 5: Solve for x
    x = 29,254,099,374.87/187,891.74
  6. Step 6: Final answer
    x = 155,696.57

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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.