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Finding the Fourth Proportional to 189,431.84, 284,060.28 and 71,018.48

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Solution

The fourth proportional to 189,431.84, 284,060.28 and 71,018.48 is: 106,494.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,431.84 : 284,060.28 = 71,018.48 : x
  2. Step 2: Convert to fraction form
    189,431.84/284,060.28 = 71,018.48/x
  3. Step 3: Cross multiply
    189,431.84x = 284,060.28 × 71,018.48
  4. Step 4: Simplify right side
    189,431.84x = 20,173,529,313.97
  5. Step 5: Solve for x
    x = 20,173,529,313.97/189,431.84
  6. Step 6: Final answer
    x = 106,494.92

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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.