Home / 131,709.89-181,759.65-71,280.97

Finding the Fourth Proportional to 131,709.89, 181,759.65 and 71,280.97

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Solution

The fourth proportional to 131,709.89, 181,759.65 and 71,280.97 is: 98,367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,709.89 : 181,759.65 = 71,280.97 : x
  2. Step 2: Convert to fraction form
    131,709.89/181,759.65 = 71,280.97/x
  3. Step 3: Cross multiply
    131,709.89x = 181,759.65 × 71,280.97
  4. Step 4: Simplify right side
    131,709.89x = 12,956,003,250.06
  5. Step 5: Solve for x
    x = 12,956,003,250.06/131,709.89
  6. Step 6: Final answer
    x = 98,367.74

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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.