Home / 86,736.16-129,371.37-84,111.04

Finding the Fourth Proportional to 86,736.16, 129,371.37 and 84,111.04

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Solution

The fourth proportional to 86,736.16, 129,371.37 and 84,111.04 is: 125,455.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,736.16 : 129,371.37 = 84,111.04 : x
  2. Step 2: Convert to fraction form
    86,736.16/129,371.37 = 84,111.04/x
  3. Step 3: Cross multiply
    86,736.16x = 129,371.37 × 84,111.04
  4. Step 4: Simplify right side
    86,736.16x = 10,881,560,476.92
  5. Step 5: Solve for x
    x = 10,881,560,476.92/86,736.16
  6. Step 6: Final answer
    x = 125,455.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.