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Finding the Fourth Proportional to 139,606.56, 192,728.40 and 107,703.84

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Solution

The fourth proportional to 139,606.56, 192,728.40 and 107,703.84 is: 148,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,606.56 : 192,728.40 = 107,703.84 : x
  2. Step 2: Convert to fraction form
    139,606.56/192,728.40 = 107,703.84/x
  3. Step 3: Cross multiply
    139,606.56x = 192,728.40 × 107,703.84
  4. Step 4: Simplify right side
    139,606.56x = 20,757,588,757.06
  5. Step 5: Solve for x
    x = 20,757,588,757.06/139,606.56
  6. Step 6: Final answer
    x = 148,686.34

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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.