Home / 131,709.75-181,759.89-71,280.36

Finding the Fourth Proportional to 131,709.75, 181,759.89 and 71,280.36

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Solution

The fourth proportional to 131,709.75, 181,759.89 and 71,280.36 is: 98,367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,709.75 : 181,759.89 = 71,280.36 : x
  2. Step 2: Convert to fraction form
    131,709.75/181,759.89 = 71,280.36/x
  3. Step 3: Cross multiply
    131,709.75x = 181,759.89 × 71,280.36
  4. Step 4: Simplify right side
    131,709.75x = 12,955,910,392.76
  5. Step 5: Solve for x
    x = 12,955,910,392.76/131,709.75
  6. Step 6: Final answer
    x = 98,367.13

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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.