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Finding the Fourth Proportional to 122,698.58, 169,325.78 and 68,980.59

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Solution

The fourth proportional to 122,698.58, 169,325.78 and 68,980.59 is: 95,194.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,698.58 : 169,325.78 = 68,980.59 : x
  2. Step 2: Convert to fraction form
    122,698.58/169,325.78 = 68,980.59/x
  3. Step 3: Cross multiply
    122,698.58x = 169,325.78 × 68,980.59
  4. Step 4: Simplify right side
    122,698.58x = 11,680,191,861.71
  5. Step 5: Solve for x
    x = 11,680,191,861.71/122,698.58
  6. Step 6: Final answer
    x = 95,194.19

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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.