Home / 189,415.42-284,039.43-71,003.70

Finding the Fourth Proportional to 189,415.42, 284,039.43 and 71,003.70

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Solution

The fourth proportional to 189,415.42, 284,039.43 and 71,003.70 is: 106,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,415.42 : 284,039.43 = 71,003.70 : x
  2. Step 2: Convert to fraction form
    189,415.42/284,039.43 = 71,003.70/x
  3. Step 3: Cross multiply
    189,415.42x = 284,039.43 × 71,003.70
  4. Step 4: Simplify right side
    189,415.42x = 20,167,850,475.89
  5. Step 5: Solve for x
    x = 20,167,850,475.89/189,415.42
  6. Step 6: Final answer
    x = 106,474.17

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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.