Home / 129,918.52-179,411.37-122,842.64

Finding the Fourth Proportional to 129,918.52, 179,411.37 and 122,842.64

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Solution

The fourth proportional to 129,918.52, 179,411.37 and 122,842.64 is: 169,639.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,918.52 : 179,411.37 = 122,842.64 : x
  2. Step 2: Convert to fraction form
    129,918.52/179,411.37 = 122,842.64/x
  3. Step 3: Cross multiply
    129,918.52x = 179,411.37 × 122,842.64
  4. Step 4: Simplify right side
    129,918.52x = 22,039,366,336.82
  5. Step 5: Solve for x
    x = 22,039,366,336.82/129,918.52
  6. Step 6: Final answer
    x = 169,639.91

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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.