Home / 131,863.39-181,971.39-71,434.25

Finding the Fourth Proportional to 131,863.39, 181,971.39 and 71,434.25

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Solution

The fourth proportional to 131,863.39, 181,971.39 and 71,434.25 is: 98,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,863.39 : 181,971.39 = 71,434.25 : x
  2. Step 2: Convert to fraction form
    131,863.39/181,971.39 = 71,434.25/x
  3. Step 3: Cross multiply
    131,863.39x = 181,971.39 × 71,434.25
  4. Step 4: Simplify right side
    131,863.39x = 12,998,989,806.52
  5. Step 5: Solve for x
    x = 12,998,989,806.52/131,863.39
  6. Step 6: Final answer
    x = 98,579.22

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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.