Home / 156,115.20-215,292.75-103,634.36

Finding the Fourth Proportional to 156,115.20, 215,292.75 and 103,634.36

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Solution

The fourth proportional to 156,115.20, 215,292.75 and 103,634.36 is: 142,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,115.20 : 215,292.75 = 103,634.36 : x
  2. Step 2: Convert to fraction form
    156,115.20/215,292.75 = 103,634.36/x
  3. Step 3: Cross multiply
    156,115.20x = 215,292.75 × 103,634.36
  4. Step 4: Simplify right side
    156,115.20x = 22,311,725,282.43
  5. Step 5: Solve for x
    x = 22,311,725,282.43/156,115.20
  6. Step 6: Final answer
    x = 142,918.34

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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.