Home / 149,077.15-205,731.96-85,427.25

Finding the Fourth Proportional to 149,077.15, 205,731.96 and 85,427.25

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Solution

The fourth proportional to 149,077.15, 205,731.96 and 85,427.25 is: 117,892.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,077.15 : 205,731.96 = 85,427.25 : x
  2. Step 2: Convert to fraction form
    149,077.15/205,731.96 = 85,427.25/x
  3. Step 3: Cross multiply
    149,077.15x = 205,731.96 × 85,427.25
  4. Step 4: Simplify right side
    149,077.15x = 17,575,115,579.91
  5. Step 5: Solve for x
    x = 17,575,115,579.91/149,077.15
  6. Step 6: Final answer
    x = 117,892.75

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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.