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Finding the Fourth Proportional to 122,340.30, 168,836.31 and 68,642.34

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Solution

The fourth proportional to 122,340.30, 168,836.31 and 68,642.34 is: 94,730.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,340.30 : 168,836.31 = 68,642.34 : x
  2. Step 2: Convert to fraction form
    122,340.30/168,836.31 = 68,642.34/x
  3. Step 3: Cross multiply
    122,340.30x = 168,836.31 × 68,642.34
  4. Step 4: Simplify right side
    122,340.30x = 11,589,319,395.37
  5. Step 5: Solve for x
    x = 11,589,319,395.37/122,340.30
  6. Step 6: Final answer
    x = 94,730.19

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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.