Home / 121,029,720.33-166,998,171.28-72,141,697.29

Finding the Fourth Proportional to 121,029,720.33, 166,998,171.28 and 72,141,697.29

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Solution

The fourth proportional to 121,029,720.33, 166,998,171.28 and 72,141,697.29 is: 99,541,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,720.33 : 166,998,171.28 = 72,141,697.29 : x
  2. Step 2: Convert to fraction form
    121,029,720.33/166,998,171.28 = 72,141,697.29/x
  3. Step 3: Cross multiply
    121,029,720.33x = 166,998,171.28 × 72,141,697.29
  4. Step 4: Simplify right side
    121,029,720.33x = 12,047,531,520,882,828
  5. Step 5: Solve for x
    x = 12,047,531,520,882,828/121,029,720.33
  6. Step 6: Final answer
    x = 99,541,926.46

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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.