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Finding the Fourth Proportional to 121,896.20, 182,844.30 and 88,459.40

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Solution

The fourth proportional to 121,896.20, 182,844.30 and 88,459.40 is: 132,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,896.20 : 182,844.30 = 88,459.40 : x
  2. Step 2: Convert to fraction form
    121,896.20/182,844.30 = 88,459.40/x
  3. Step 3: Cross multiply
    121,896.20x = 182,844.30 × 88,459.40
  4. Step 4: Simplify right side
    121,896.20x = 16,174,297,071.42
  5. Step 5: Solve for x
    x = 16,174,297,071.42/121,896.20
  6. Step 6: Final answer
    x = 132,689.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.