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Finding the Fourth Proportional to 285,122, 427,683 and 88,130

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Solution

The fourth proportional to 285,122, 427,683 and 88,130 is: 132,195

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,122 : 427,683 = 88,130 : x
  2. Step 2: Convert to fraction form
    285,122/427,683 = 88,130/x
  3. Step 3: Cross multiply
    285,122x = 427,683 × 88,130
  4. Step 4: Simplify right side
    285,122x = 37,691,702,790
  5. Step 5: Solve for x
    x = 37,691,702,790/285,122
  6. Step 6: Final answer
    x = 132,195

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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.