Home / 145,589.32-200,896.98-81,949

Finding the Fourth Proportional to 145,589.32, 200,896.98 and 81,949

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Solution

The fourth proportional to 145,589.32, 200,896.98 and 81,949 is: 113,080.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,589.32 : 200,896.98 = 81,949 : x
  2. Step 2: Convert to fraction form
    145,589.32/200,896.98 = 81,949/x
  3. Step 3: Cross multiply
    145,589.32x = 200,896.98 × 81,949
  4. Step 4: Simplify right side
    145,589.32x = 16,463,306,614.02
  5. Step 5: Solve for x
    x = 16,463,306,614.02/145,589.32
  6. Step 6: Final answer
    x = 113,080.46

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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.