Home / 86,736.66-129,372.12-84,111.54

Finding the Fourth Proportional to 86,736.66, 129,372.12 and 84,111.54

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Solution

The fourth proportional to 86,736.66, 129,372.12 and 84,111.54 is: 125,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,736.66 : 129,372.12 = 84,111.54 : x
  2. Step 2: Convert to fraction form
    86,736.66/129,372.12 = 84,111.54/x
  3. Step 3: Cross multiply
    86,736.66x = 129,372.12 × 84,111.54
  4. Step 4: Simplify right side
    86,736.66x = 10,881,688,246.26
  5. Step 5: Solve for x
    x = 10,881,688,246.26/86,736.66
  6. Step 6: Final answer
    x = 125,456.62

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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.