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Finding the Fourth Proportional to 133,478.60, 200,412.30 and 103,929.80

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Solution

The fourth proportional to 133,478.60, 200,412.30 and 103,929.80 is: 156,046.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,478.60 : 200,412.30 = 103,929.80 : x
  2. Step 2: Convert to fraction form
    133,478.60/200,412.30 = 103,929.80/x
  3. Step 3: Cross multiply
    133,478.60x = 200,412.30 × 103,929.80
  4. Step 4: Simplify right side
    133,478.60x = 20,828,810,256.54
  5. Step 5: Solve for x
    x = 20,828,810,256.54/133,478.60
  6. Step 6: Final answer
    x = 156,046.06

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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.