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Finding the Fourth Proportional to 124,662.45, 171,884.10 and 86,455.11

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Solution

The fourth proportional to 124,662.45, 171,884.10 and 86,455.11 is: 119,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,662.45 : 171,884.10 = 86,455.11 : x
  2. Step 2: Convert to fraction form
    124,662.45/171,884.10 = 86,455.11/x
  3. Step 3: Cross multiply
    124,662.45x = 171,884.10 × 86,455.11
  4. Step 4: Simplify right side
    124,662.45x = 14,860,258,772.75
  5. Step 5: Solve for x
    x = 14,860,258,772.75/124,662.45
  6. Step 6: Final answer
    x = 119,203.97

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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.