Home / 131,856.14-181,961.53-71,426.60

Finding the Fourth Proportional to 131,856.14, 181,961.53 and 71,426.60

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Solution

The fourth proportional to 131,856.14, 181,961.53 and 71,426.60 is: 98,568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,856.14 : 181,961.53 = 71,426.60 : x
  2. Step 2: Convert to fraction form
    131,856.14/181,961.53 = 71,426.60/x
  3. Step 3: Cross multiply
    131,856.14x = 181,961.53 × 71,426.60
  4. Step 4: Simplify right side
    131,856.14x = 12,996,893,418.70
  5. Step 5: Solve for x
    x = 12,996,893,418.70/131,856.14
  6. Step 6: Final answer
    x = 98,568.74

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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.