Home / 113,215.78-169,662.75-83,399.14

Finding the Fourth Proportional to 113,215.78, 169,662.75 and 83,399.14

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Solution

The fourth proportional to 113,215.78, 169,662.75 and 83,399.14 is: 124,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,215.78 : 169,662.75 = 83,399.14 : x
  2. Step 2: Convert to fraction form
    113,215.78/169,662.75 = 83,399.14/x
  3. Step 3: Cross multiply
    113,215.78x = 169,662.75 × 83,399.14
  4. Step 4: Simplify right side
    113,215.78x = 14,149,727,440.04
  5. Step 5: Solve for x
    x = 14,149,727,440.04/113,215.78
  6. Step 6: Final answer
    x = 124,980.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.