Home / 189,911.36-284,666.16-71,531.48

Finding the Fourth Proportional to 189,911.36, 284,666.16 and 71,531.48

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Solution

The fourth proportional to 189,911.36, 284,666.16 and 71,531.48 is: 107,221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,911.36 : 284,666.16 = 71,531.48 : x
  2. Step 2: Convert to fraction form
    189,911.36/284,666.16 = 71,531.48/x
  3. Step 3: Cross multiply
    189,911.36x = 284,666.16 × 71,531.48
  4. Step 4: Simplify right side
    189,911.36x = 20,362,591,730.72
  5. Step 5: Solve for x
    x = 20,362,591,730.72/189,911.36
  6. Step 6: Final answer
    x = 107,221.56

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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.