Home / 142,992,644.26-197,324,038.62-81,111,654.22

Finding the Fourth Proportional to 142,992,644.26, 197,324,038.62 and 81,111,654.22

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Solution

The fourth proportional to 142,992,644.26, 197,324,038.62 and 81,111,654.22 is: 111,930,786.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,644.26 : 197,324,038.62 = 81,111,654.22 : x
  2. Step 2: Convert to fraction form
    142,992,644.26/197,324,038.62 = 81,111,654.22/x
  3. Step 3: Cross multiply
    142,992,644.26x = 197,324,038.62 × 81,111,654.22
  4. Step 4: Simplify right side
    142,992,644.26x = 16,005,279,189,346,056
  5. Step 5: Solve for x
    x = 16,005,279,189,346,056/142,992,644.26
  6. Step 6: Final answer
    x = 111,930,786.88

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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.