Home / 135,368.36-186,805.62-74,939

Finding the Fourth Proportional to 135,368.36, 186,805.62 and 74,939

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Solution

The fourth proportional to 135,368.36, 186,805.62 and 74,939 is: 103,414.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,368.36 : 186,805.62 = 74,939 : x
  2. Step 2: Convert to fraction form
    135,368.36/186,805.62 = 74,939/x
  3. Step 3: Cross multiply
    135,368.36x = 186,805.62 × 74,939
  4. Step 4: Simplify right side
    135,368.36x = 13,999,026,357.18
  5. Step 5: Solve for x
    x = 13,999,026,357.18/135,368.36
  6. Step 6: Final answer
    x = 103,414.32

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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.