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Finding the Fourth Proportional to 122,881.08, 169,581.30 and 69,169.54

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Solution

The fourth proportional to 122,881.08, 169,581.30 and 69,169.54 is: 95,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,881.08 : 169,581.30 = 69,169.54 : x
  2. Step 2: Convert to fraction form
    122,881.08/169,581.30 = 69,169.54/x
  3. Step 3: Cross multiply
    122,881.08x = 169,581.30 × 69,169.54
  4. Step 4: Simplify right side
    122,881.08x = 11,729,860,513.60
  5. Step 5: Solve for x
    x = 11,729,860,513.60/122,881.08
  6. Step 6: Final answer
    x = 95,457.01

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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.