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Finding the Fourth Proportional to 107,039.80, 160,559.70 and 71,788.60

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Solution

The fourth proportional to 107,039.80, 160,559.70 and 71,788.60 is: 107,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,039.80 : 160,559.70 = 71,788.60 : x
  2. Step 2: Convert to fraction form
    107,039.80/160,559.70 = 71,788.60/x
  3. Step 3: Cross multiply
    107,039.80x = 160,559.70 × 71,788.60
  4. Step 4: Simplify right side
    107,039.80x = 11,526,356,079.42
  5. Step 5: Solve for x
    x = 11,526,356,079.42/107,039.80
  6. Step 6: Final answer
    x = 107,682.90

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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.