Home / 121,846,663.80-168,147,416.16-66,091,945.68

Finding the Fourth Proportional to 121,846,663.80, 168,147,416.16 and 66,091,945.68

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Solution

The fourth proportional to 121,846,663.80, 168,147,416.16 and 66,091,945.68 is: 91,206,353.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,846,663.80 : 168,147,416.16 = 66,091,945.68 : x
  2. Step 2: Convert to fraction form
    121,846,663.80/168,147,416.16 = 66,091,945.68/x
  3. Step 3: Cross multiply
    121,846,663.80x = 168,147,416.16 × 66,091,945.68
  4. Step 4: Simplify right side
    121,846,663.80x = 11,113,189,895,079,074
  5. Step 5: Solve for x
    x = 11,113,189,895,079,074/121,846,663.80
  6. Step 6: Final answer
    x = 91,206,353.53

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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.