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Finding the Fourth Proportional to 187,859.84, 281,658.48 and 69,515.78

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Solution

The fourth proportional to 187,859.84, 281,658.48 and 69,515.78 is: 104,225.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,859.84 : 281,658.48 = 69,515.78 : x
  2. Step 2: Convert to fraction form
    187,859.84/281,658.48 = 69,515.78/x
  3. Step 3: Cross multiply
    187,859.84x = 281,658.48 × 69,515.78
  4. Step 4: Simplify right side
    187,859.84x = 19,579,708,930.81
  5. Step 5: Solve for x
    x = 19,579,708,930.81/187,859.84
  6. Step 6: Final answer
    x = 104,225.09

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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.