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Finding the Fourth Proportional to 88,636.90, 122,070.09 and 86,701.54

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Solution

The fourth proportional to 88,636.90, 122,070.09 and 86,701.54 is: 119,404.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,636.90 : 122,070.09 = 86,701.54 : x
  2. Step 2: Convert to fraction form
    88,636.90/122,070.09 = 86,701.54/x
  3. Step 3: Cross multiply
    88,636.90x = 122,070.09 × 86,701.54
  4. Step 4: Simplify right side
    88,636.90x = 10,583,664,790.94
  5. Step 5: Solve for x
    x = 10,583,664,790.94/88,636.90
  6. Step 6: Final answer
    x = 119,404.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.