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Finding the Fourth Proportional to 122,227.16, 168,357.96 and 86,354.88

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Solution

The fourth proportional to 122,227.16, 168,357.96 and 86,354.88 is: 118,946.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,227.16 : 168,357.96 = 86,354.88 : x
  2. Step 2: Convert to fraction form
    122,227.16/168,357.96 = 86,354.88/x
  3. Step 3: Cross multiply
    122,227.16x = 168,357.96 × 86,354.88
  4. Step 4: Simplify right side
    122,227.16x = 14,538,531,432.84
  5. Step 5: Solve for x
    x = 14,538,531,432.84/122,227.16
  6. Step 6: Final answer
    x = 118,946.82

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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.