Home / 119,121.26-164,386.17-65,405.79

Finding the Fourth Proportional to 119,121.26, 164,386.17 and 65,405.79

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Solution

The fourth proportional to 119,121.26, 164,386.17 and 65,405.79 is: 90,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,121.26 : 164,386.17 = 65,405.79 : x
  2. Step 2: Convert to fraction form
    119,121.26/164,386.17 = 65,405.79/x
  3. Step 3: Cross multiply
    119,121.26x = 164,386.17 × 65,405.79
  4. Step 4: Simplify right side
    119,121.26x = 10,751,807,313.92
  5. Step 5: Solve for x
    x = 10,751,807,313.92/119,121.26
  6. Step 6: Final answer
    x = 90,259.35

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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.