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Finding the Fourth Proportional to 139,157.44, 193,369.44 and 137,712.40

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Solution

The fourth proportional to 139,157.44, 193,369.44 and 137,712.40 is: 191,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,157.44 : 193,369.44 = 137,712.40 : x
  2. Step 2: Convert to fraction form
    139,157.44/193,369.44 = 137,712.40/x
  3. Step 3: Cross multiply
    139,157.44x = 193,369.44 × 137,712.40
  4. Step 4: Simplify right side
    139,157.44x = 26,629,369,669.06
  5. Step 5: Solve for x
    x = 26,629,369,669.06/139,157.44
  6. Step 6: Final answer
    x = 191,361.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.