Home / 149,035.36-205,651.56-85,369.36

Finding the Fourth Proportional to 149,035.36, 205,651.56 and 85,369.36

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Solution

The fourth proportional to 149,035.36, 205,651.56 and 85,369.36 is: 117,799.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,035.36 : 205,651.56 = 85,369.36 : x
  2. Step 2: Convert to fraction form
    149,035.36/205,651.56 = 85,369.36/x
  3. Step 3: Cross multiply
    149,035.36x = 205,651.56 × 85,369.36
  4. Step 4: Simplify right side
    149,035.36x = 17,556,342,060.20
  5. Step 5: Solve for x
    x = 17,556,342,060.20/149,035.36
  6. Step 6: Final answer
    x = 117,799.84

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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.