Home / 100,817.13-139,130.96-55,498.44

Finding the Fourth Proportional to 100,817.13, 139,130.96 and 55,498.44

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Solution

The fourth proportional to 100,817.13, 139,130.96 and 55,498.44 is: 76,589.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,817.13 : 139,130.96 = 55,498.44 : x
  2. Step 2: Convert to fraction form
    100,817.13/139,130.96 = 55,498.44/x
  3. Step 3: Cross multiply
    100,817.13x = 139,130.96 × 55,498.44
  4. Step 4: Simplify right side
    100,817.13x = 7,721,550,958.21
  5. Step 5: Solve for x
    x = 7,721,550,958.21/100,817.13
  6. Step 6: Final answer
    x = 76,589.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.