Home / 131,749.92-181,813.82-71,319.33

Finding the Fourth Proportional to 131,749.92, 181,813.82 and 71,319.33

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Solution

The fourth proportional to 131,749.92, 181,813.82 and 71,319.33 is: 98,420.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,749.92 : 181,813.82 = 71,319.33 : x
  2. Step 2: Convert to fraction form
    131,749.92/181,813.82 = 71,319.33/x
  3. Step 3: Cross multiply
    131,749.92x = 181,813.82 × 71,319.33
  4. Step 4: Simplify right side
    131,749.92x = 12,966,839,470.54
  5. Step 5: Solve for x
    x = 12,966,839,470.54/131,749.92
  6. Step 6: Final answer
    x = 98,420.09

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1.5x scale

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.