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Finding the Fourth Proportional to 133,628.30, 200,053.65 and 81,010.70

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Solution

The fourth proportional to 133,628.30, 200,053.65 and 81,010.70 is: 121,280.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,628.30 : 200,053.65 = 81,010.70 : x
  2. Step 2: Convert to fraction form
    133,628.30/200,053.65 = 81,010.70/x
  3. Step 3: Cross multiply
    133,628.30x = 200,053.65 × 81,010.70
  4. Step 4: Simplify right side
    133,628.30x = 16,206,486,224.06
  5. Step 5: Solve for x
    x = 16,206,486,224.06/133,628.30
  6. Step 6: Final answer
    x = 121,280.34

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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.