Home / 107,861.20-161,791.80-70,536.40

Finding the Fourth Proportional to 107,861.20, 161,791.80 and 70,536.40

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Solution

The fourth proportional to 107,861.20, 161,791.80 and 70,536.40 is: 105,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,861.20 : 161,791.80 = 70,536.40 : x
  2. Step 2: Convert to fraction form
    107,861.20/161,791.80 = 70,536.40/x
  3. Step 3: Cross multiply
    107,861.20x = 161,791.80 × 70,536.40
  4. Step 4: Simplify right side
    107,861.20x = 11,412,211,121.52
  5. Step 5: Solve for x
    x = 11,412,211,121.52/107,861.20
  6. Step 6: Final answer
    x = 105,804.60

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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.