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Finding the Fourth Proportional to 122,581.86, 169,159.04 and 68,133.76

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Solution

The fourth proportional to 122,581.86, 169,159.04 and 68,133.76 is: 94,022.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,581.86 : 169,159.04 = 68,133.76 : x
  2. Step 2: Convert to fraction form
    122,581.86/169,159.04 = 68,133.76/x
  3. Step 3: Cross multiply
    122,581.86x = 169,159.04 × 68,133.76
  4. Step 4: Simplify right side
    122,581.86x = 11,525,441,433.19
  5. Step 5: Solve for x
    x = 11,525,441,433.19/122,581.86
  6. Step 6: Final answer
    x = 94,022.41

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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.