Home / 100,850.18-139,172.10-55,527.22

Finding the Fourth Proportional to 100,850.18, 139,172.10 and 55,527.22

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Solution

The fourth proportional to 100,850.18, 139,172.10 and 55,527.22 is: 76,626.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,850.18 : 139,172.10 = 55,527.22 : x
  2. Step 2: Convert to fraction form
    100,850.18/139,172.10 = 55,527.22/x
  3. Step 3: Cross multiply
    100,850.18x = 139,172.10 × 55,527.22
  4. Step 4: Simplify right side
    100,850.18x = 7,727,839,118.70
  5. Step 5: Solve for x
    x = 7,727,839,118.70/100,850.18
  6. Step 6: Final answer
    x = 76,626.92

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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.