Home / 137,837.98-190,221-77,419.27

Finding the Fourth Proportional to 137,837.98, 190,221 and 77,419.27

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Solution

The fourth proportional to 137,837.98, 190,221 and 77,419.27 is: 106,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,837.98 : 190,221 = 77,419.27 : x
  2. Step 2: Convert to fraction form
    137,837.98/190,221 = 77,419.27/x
  3. Step 3: Cross multiply
    137,837.98x = 190,221 × 77,419.27
  4. Step 4: Simplify right side
    137,837.98x = 14,726,770,958.67
  5. Step 5: Solve for x
    x = 14,726,770,958.67/137,837.98
  6. Step 6: Final answer
    x = 106,841.17

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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.