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Finding the Fourth Proportional to 122,894.73, 169,581.53 and 69,178.77

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Solution

The fourth proportional to 122,894.73, 169,581.53 and 69,178.77 is: 95,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,894.73 : 169,581.53 = 69,178.77 : x
  2. Step 2: Convert to fraction form
    122,894.73/169,581.53 = 69,178.77/x
  3. Step 3: Cross multiply
    122,894.73x = 169,581.53 × 69,178.77
  4. Step 4: Simplify right side
    122,894.73x = 11,731,441,833.07
  5. Step 5: Solve for x
    x = 11,731,441,833.07/122,894.73
  6. Step 6: Final answer
    x = 95,459.28

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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.