Home / 135,353.09-186,788.90-74,929.32

Finding the Fourth Proportional to 135,353.09, 186,788.90 and 74,929.32

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Solution

The fourth proportional to 135,353.09, 186,788.90 and 74,929.32 is: 103,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,353.09 : 186,788.90 = 74,929.32 : x
  2. Step 2: Convert to fraction form
    135,353.09/186,788.90 = 74,929.32/x
  3. Step 3: Cross multiply
    135,353.09x = 186,788.90 × 74,929.32
  4. Step 4: Simplify right side
    135,353.09x = 13,995,965,447.87
  5. Step 5: Solve for x
    x = 13,995,965,447.87/135,353.09
  6. Step 6: Final answer
    x = 103,403.37

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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.