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Finding the Fourth Proportional to 130,570.60, 195,920.70 and 74,453.80

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Solution

The fourth proportional to 130,570.60, 195,920.70 and 74,453.80 is: 111,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,570.60 : 195,920.70 = 74,453.80 : x
  2. Step 2: Convert to fraction form
    130,570.60/195,920.70 = 74,453.80/x
  3. Step 3: Cross multiply
    130,570.60x = 195,920.70 × 74,453.80
  4. Step 4: Simplify right side
    130,570.60x = 14,587,040,613.66
  5. Step 5: Solve for x
    x = 14,587,040,613.66/130,570.60
  6. Step 6: Final answer
    x = 111,717.65

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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.