Home / 105,251.60-145,249.30-57,507.91

Finding the Fourth Proportional to 105,251.60, 145,249.30 and 57,507.91

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Solution

The fourth proportional to 105,251.60, 145,249.30 and 57,507.91 is: 79,362.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,251.60 : 145,249.30 = 57,507.91 : x
  2. Step 2: Convert to fraction form
    105,251.60/145,249.30 = 57,507.91/x
  3. Step 3: Cross multiply
    105,251.60x = 145,249.30 × 57,507.91
  4. Step 4: Simplify right side
    105,251.60x = 8,352,983,380.72
  5. Step 5: Solve for x
    x = 8,352,983,380.72/105,251.60
  6. Step 6: Final answer
    x = 79,362.05

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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.