Home / 121,029,720.27-166,998,171.20-72,141,697.23

Finding the Fourth Proportional to 121,029,720.27, 166,998,171.20 and 72,141,697.23

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Solution

The fourth proportional to 121,029,720.27, 166,998,171.20 and 72,141,697.23 is: 99,541,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,720.27 : 166,998,171.20 = 72,141,697.23 : x
  2. Step 2: Convert to fraction form
    121,029,720.27/166,998,171.20 = 72,141,697.23/x
  3. Step 3: Cross multiply
    121,029,720.27x = 166,998,171.20 × 72,141,697.23
  4. Step 4: Simplify right side
    121,029,720.27x = 12,047,531,504,313,398
  5. Step 5: Solve for x
    x = 12,047,531,504,313,398/121,029,720.27
  6. Step 6: Final answer
    x = 99,541,926.38

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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.