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Finding the Fourth Proportional to 138,996.99, 191,714.58 and 88,018.02

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Solution

The fourth proportional to 138,996.99, 191,714.58 and 88,018.02 is: 121,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,996.99 : 191,714.58 = 88,018.02 : x
  2. Step 2: Convert to fraction form
    138,996.99/191,714.58 = 88,018.02/x
  3. Step 3: Cross multiply
    138,996.99x = 191,714.58 × 88,018.02
  4. Step 4: Simplify right side
    138,996.99x = 16,874,337,736.73
  5. Step 5: Solve for x
    x = 16,874,337,736.73/138,996.99
  6. Step 6: Final answer
    x = 121,400.74

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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.