Home / 142,992,659.92-197,324,060.19-81,111,669.88

Finding the Fourth Proportional to 142,992,659.92, 197,324,060.19 and 81,111,669.88

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Solution

The fourth proportional to 142,992,659.92, 197,324,060.19 and 81,111,669.88 is: 111,930,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,659.92 : 197,324,060.19 = 81,111,669.88 : x
  2. Step 2: Convert to fraction form
    142,992,659.92/197,324,060.19 = 81,111,669.88/x
  3. Step 3: Cross multiply
    142,992,659.92x = 197,324,060.19 × 81,111,669.88
  4. Step 4: Simplify right side
    142,992,659.92x = 16,005,284,029,512,528
  5. Step 5: Solve for x
    x = 16,005,284,029,512,528/142,992,659.92
  6. Step 6: Final answer
    x = 111,930,808.47

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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.