Home / 120,336,971.96-166,220,796.57-99,513,117.92

Finding the Fourth Proportional to 120,336,971.96, 166,220,796.57 and 99,513,117.92

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Solution

The fourth proportional to 120,336,971.96, 166,220,796.57 and 99,513,117.92 is: 137,456,921.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,336,971.96 : 166,220,796.57 = 99,513,117.92 : x
  2. Step 2: Convert to fraction form
    120,336,971.96/166,220,796.57 = 99,513,117.92/x
  3. Step 3: Cross multiply
    120,336,971.96x = 166,220,796.57 × 99,513,117.92
  4. Step 4: Simplify right side
    120,336,971.96x = 16,541,149,729,826,742
  5. Step 5: Solve for x
    x = 16,541,149,729,826,742/120,336,971.96
  6. Step 6: Final answer
    x = 137,456,921.68

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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.