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Finding the Fourth Proportional to 100,841.92, 139,164.88 and 55,524.64

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Solution

The fourth proportional to 100,841.92, 139,164.88 and 55,524.64 is: 76,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,841.92 : 139,164.88 = 55,524.64 : x
  2. Step 2: Convert to fraction form
    100,841.92/139,164.88 = 55,524.64/x
  3. Step 3: Cross multiply
    100,841.92x = 139,164.88 × 55,524.64
  4. Step 4: Simplify right side
    100,841.92x = 7,727,079,862.64
  5. Step 5: Solve for x
    x = 7,727,079,862.64/100,841.92
  6. Step 6: Final answer
    x = 76,625.67

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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.