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Finding the Fourth Proportional to 122,336.71, 168,822.62 and 71,379.07

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Solution

The fourth proportional to 122,336.71, 168,822.62 and 71,379.07 is: 98,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,336.71 : 168,822.62 = 71,379.07 : x
  2. Step 2: Convert to fraction form
    122,336.71/168,822.62 = 71,379.07/x
  3. Step 3: Cross multiply
    122,336.71x = 168,822.62 × 71,379.07
  4. Step 4: Simplify right side
    122,336.71x = 12,050,400,409.56
  5. Step 5: Solve for x
    x = 12,050,400,409.56/122,336.71
  6. Step 6: Final answer
    x = 98,501.92

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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.