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Finding the Fourth Proportional to 163,200.62, 225,221.31 and 91,585.02

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Solution

The fourth proportional to 163,200.62, 225,221.31 and 91,585.02 is: 126,389.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,200.62 : 225,221.31 = 91,585.02 : x
  2. Step 2: Convert to fraction form
    163,200.62/225,221.31 = 91,585.02/x
  3. Step 3: Cross multiply
    163,200.62x = 225,221.31 × 91,585.02
  4. Step 4: Simplify right side
    163,200.62x = 20,626,899,025.36
  5. Step 5: Solve for x
    x = 20,626,899,025.36/163,200.62
  6. Step 6: Final answer
    x = 126,389.83

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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.