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Finding the Fourth Proportional to 133,386.20, 200,010.90 and 39,879.80

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Solution

The fourth proportional to 133,386.20, 200,010.90 and 39,879.80 is: 59,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,386.20 : 200,010.90 = 39,879.80 : x
  2. Step 2: Convert to fraction form
    133,386.20/200,010.90 = 39,879.80/x
  3. Step 3: Cross multiply
    133,386.20x = 200,010.90 × 39,879.80
  4. Step 4: Simplify right side
    133,386.20x = 7,976,394,689.82
  5. Step 5: Solve for x
    x = 7,976,394,689.82/133,386.20
  6. Step 6: Final answer
    x = 59,799.25

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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.