Home / 115,018.36-158,787.64-80,668.58

Finding the Fourth Proportional to 115,018.36, 158,787.64 and 80,668.58

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Solution

The fourth proportional to 115,018.36, 158,787.64 and 80,668.58 is: 111,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,018.36 : 158,787.64 = 80,668.58 : x
  2. Step 2: Convert to fraction form
    115,018.36/158,787.64 = 80,668.58/x
  3. Step 3: Cross multiply
    115,018.36x = 158,787.64 × 80,668.58
  4. Step 4: Simplify right side
    115,018.36x = 12,809,173,440.35
  5. Step 5: Solve for x
    x = 12,809,173,440.35/115,018.36
  6. Step 6: Final answer
    x = 111,366.34

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1.5x scale

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.