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Finding the Fourth Proportional to 122,071.91, 168,476.30 and 88,190.01

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Solution

The fourth proportional to 122,071.91, 168,476.30 and 88,190.01 is: 121,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,071.91 : 168,476.30 = 88,190.01 : x
  2. Step 2: Convert to fraction form
    122,071.91/168,476.30 = 88,190.01/x
  3. Step 3: Cross multiply
    122,071.91x = 168,476.30 × 88,190.01
  4. Step 4: Simplify right side
    122,071.91x = 14,857,926,581.76
  5. Step 5: Solve for x
    x = 14,857,926,581.76/122,071.91
  6. Step 6: Final answer
    x = 121,714.54

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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.