Home / 101,272.78-152,001.75-51,387.22

Finding the Fourth Proportional to 101,272.78, 152,001.75 and 51,387.22

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Solution

The fourth proportional to 101,272.78, 152,001.75 and 51,387.22 is: 77,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,272.78 : 152,001.75 = 51,387.22 : x
  2. Step 2: Convert to fraction form
    101,272.78/152,001.75 = 51,387.22/x
  3. Step 3: Cross multiply
    101,272.78x = 152,001.75 × 51,387.22
  4. Step 4: Simplify right side
    101,272.78x = 7,810,947,367.64
  5. Step 5: Solve for x
    x = 7,810,947,367.64/101,272.78
  6. Step 6: Final answer
    x = 77,127.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.