Home / 158,812.22-219,078.20-128,631.62

Finding the Fourth Proportional to 158,812.22, 219,078.20 and 128,631.62

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Solution

The fourth proportional to 158,812.22, 219,078.20 and 128,631.62 is: 177,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,812.22 : 219,078.20 = 128,631.62 : x
  2. Step 2: Convert to fraction form
    158,812.22/219,078.20 = 128,631.62/x
  3. Step 3: Cross multiply
    158,812.22x = 219,078.20 × 128,631.62
  4. Step 4: Simplify right side
    158,812.22x = 28,180,383,772.68
  5. Step 5: Solve for x
    x = 28,180,383,772.68/158,812.22
  6. Step 6: Final answer
    x = 177,444.68

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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.