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Finding the Fourth Proportional to 122,260, 168,665.34 and 86,480.68

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Solution

The fourth proportional to 122,260, 168,665.34 and 86,480.68 is: 119,305.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,260 : 168,665.34 = 86,480.68 : x
  2. Step 2: Convert to fraction form
    122,260/168,665.34 = 86,480.68/x
  3. Step 3: Cross multiply
    122,260x = 168,665.34 × 86,480.68
  4. Step 4: Simplify right side
    122,260x = 14,586,293,295.63
  5. Step 5: Solve for x
    x = 14,586,293,295.63/122,260
  6. Step 6: Final answer
    x = 119,305.52

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1.5x scale

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.