Home / 71,161.98-106,742.83-66,831.72

Finding the Fourth Proportional to 71,161.98, 106,742.83 and 66,831.72

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Solution

The fourth proportional to 71,161.98, 106,742.83 and 66,831.72 is: 100,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,161.98 : 106,742.83 = 66,831.72 : x
  2. Step 2: Convert to fraction form
    71,161.98/106,742.83 = 66,831.72/x
  3. Step 3: Cross multiply
    71,161.98x = 106,742.83 × 66,831.72
  4. Step 4: Simplify right side
    71,161.98x = 7,133,806,926.57
  5. Step 5: Solve for x
    x = 7,133,806,926.57/71,161.98
  6. Step 6: Final answer
    x = 100,247.45

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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.