Home / 157,268.78-217,028.32-85,647.26

Finding the Fourth Proportional to 157,268.78, 217,028.32 and 85,647.26

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Solution

The fourth proportional to 157,268.78, 217,028.32 and 85,647.26 is: 118,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,268.78 : 217,028.32 = 85,647.26 : x
  2. Step 2: Convert to fraction form
    157,268.78/217,028.32 = 85,647.26/x
  3. Step 3: Cross multiply
    157,268.78x = 217,028.32 × 85,647.26
  4. Step 4: Simplify right side
    157,268.78x = 18,587,880,950.40
  5. Step 5: Solve for x
    x = 18,587,880,950.40/157,268.78
  6. Step 6: Final answer
    x = 118,191.80

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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.