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Finding the Fourth Proportional to 153,606.20, 230,409.30 and 90,620.60

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Solution

The fourth proportional to 153,606.20, 230,409.30 and 90,620.60 is: 135,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,606.20 : 230,409.30 = 90,620.60 : x
  2. Step 2: Convert to fraction form
    153,606.20/230,409.30 = 90,620.60/x
  3. Step 3: Cross multiply
    153,606.20x = 230,409.30 × 90,620.60
  4. Step 4: Simplify right side
    153,606.20x = 20,879,829,011.58
  5. Step 5: Solve for x
    x = 20,879,829,011.58/153,606.20
  6. Step 6: Final answer
    x = 135,930.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.