Home / 156,863.76-216,362.52-103,131.60

Finding the Fourth Proportional to 156,863.76, 216,362.52 and 103,131.60

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Solution

The fourth proportional to 156,863.76, 216,362.52 and 103,131.60 is: 142,249.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,863.76 : 216,362.52 = 103,131.60 : x
  2. Step 2: Convert to fraction form
    156,863.76/216,362.52 = 103,131.60/x
  3. Step 3: Cross multiply
    156,863.76x = 216,362.52 × 103,131.60
  4. Step 4: Simplify right side
    156,863.76x = 22,313,812,867.63
  5. Step 5: Solve for x
    x = 22,313,812,867.63/156,863.76
  6. Step 6: Final answer
    x = 142,249.64

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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.