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Finding the Fourth Proportional to 187,880.76, 281,642.94 and 69,471.72

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Solution

The fourth proportional to 187,880.76, 281,642.94 and 69,471.72 is: 104,141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,880.76 : 281,642.94 = 69,471.72 : x
  2. Step 2: Convert to fraction form
    187,880.76/281,642.94 = 69,471.72/x
  3. Step 3: Cross multiply
    187,880.76x = 281,642.94 × 69,471.72
  4. Step 4: Simplify right side
    187,880.76x = 19,566,219,467.66
  5. Step 5: Solve for x
    x = 19,566,219,467.66/187,880.76
  6. Step 6: Final answer
    x = 104,141.69

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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.