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Finding the Fourth Proportional to 187,648.95, 281,621.35 and 69,354.12

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Solution

The fourth proportional to 187,648.95, 281,621.35 and 69,354.12 is: 104,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,648.95 : 281,621.35 = 69,354.12 : x
  2. Step 2: Convert to fraction form
    187,648.95/281,621.35 = 69,354.12/x
  3. Step 3: Cross multiply
    187,648.95x = 281,621.35 × 69,354.12
  4. Step 4: Simplify right side
    187,648.95x = 19,531,600,902.46
  5. Step 5: Solve for x
    x = 19,531,600,902.46/187,648.95
  6. Step 6: Final answer
    x = 104,085.85

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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.