Home / 121,072,987.82-167,084,251.72-66,072,387.02

Finding the Fourth Proportional to 121,072,987.82, 167,084,251.72 and 66,072,387.02

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Solution

The fourth proportional to 121,072,987.82, 167,084,251.72 and 66,072,387.02 is: 91,181,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,072,987.82 : 167,084,251.72 = 66,072,387.02 : x
  2. Step 2: Convert to fraction form
    121,072,987.82/167,084,251.72 = 66,072,387.02/x
  3. Step 3: Cross multiply
    121,072,987.82x = 167,084,251.72 × 66,072,387.02
  4. Step 4: Simplify right side
    121,072,987.82x = 11,039,655,344,590,942
  5. Step 5: Solve for x
    x = 11,039,655,344,590,942/121,072,987.82
  6. Step 6: Final answer
    x = 91,181,819.69

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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.