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Finding the Fourth Proportional to 139,191.38, 208,784.51 and 44,420.81

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Solution

The fourth proportional to 139,191.38, 208,784.51 and 44,420.81 is: 66,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,191.38 : 208,784.51 = 44,420.81 : x
  2. Step 2: Convert to fraction form
    139,191.38/208,784.51 = 44,420.81/x
  3. Step 3: Cross multiply
    139,191.38x = 208,784.51 × 44,420.81
  4. Step 4: Simplify right side
    139,191.38x = 9,274,375,783.63
  5. Step 5: Solve for x
    x = 9,274,375,783.63/139,191.38
  6. Step 6: Final answer
    x = 66,630.39

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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.