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Finding the Fourth Proportional to 140,542.74, 210,828.90 and 45,780.33

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Solution

The fourth proportional to 140,542.74, 210,828.90 and 45,780.33 is: 68,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,542.74 : 210,828.90 = 45,780.33 : x
  2. Step 2: Convert to fraction form
    140,542.74/210,828.90 = 45,780.33/x
  3. Step 3: Cross multiply
    140,542.74x = 210,828.90 × 45,780.33
  4. Step 4: Simplify right side
    140,542.74x = 9,651,816,615.54
  5. Step 5: Solve for x
    x = 9,651,816,615.54/140,542.74
  6. Step 6: Final answer
    x = 68,675.31

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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.