Home / 191,409.26-287,174.23-90,203.22

Finding the Fourth Proportional to 191,409.26, 287,174.23 and 90,203.22

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Solution

The fourth proportional to 191,409.26, 287,174.23 and 90,203.22 is: 135,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,409.26 : 287,174.23 = 90,203.22 : x
  2. Step 2: Convert to fraction form
    191,409.26/287,174.23 = 90,203.22/x
  3. Step 3: Cross multiply
    191,409.26x = 287,174.23 × 90,203.22
  4. Step 4: Simplify right side
    191,409.26x = 25,904,040,021.51
  5. Step 5: Solve for x
    x = 25,904,040,021.51/191,409.26
  6. Step 6: Final answer
    x = 135,333.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.