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Finding the Fourth Proportional to 122,380.58, 168,570.52 and 86,508.92

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Solution

The fourth proportional to 122,380.58, 168,570.52 and 86,508.92 is: 119,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,380.58 : 168,570.52 = 86,508.92 : x
  2. Step 2: Convert to fraction form
    122,380.58/168,570.52 = 86,508.92/x
  3. Step 3: Cross multiply
    122,380.58x = 168,570.52 × 86,508.92
  4. Step 4: Simplify right side
    122,380.58x = 14,582,853,629.04
  5. Step 5: Solve for x
    x = 14,582,853,629.04/122,380.58
  6. Step 6: Final answer
    x = 119,159.87

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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.