Home / 105,403.24-145,490.34-69,625

Finding the Fourth Proportional to 105,403.24, 145,490.34 and 69,625

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Solution

The fourth proportional to 105,403.24, 145,490.34 and 69,625 is: 96,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,403.24 : 145,490.34 = 69,625 : x
  2. Step 2: Convert to fraction form
    105,403.24/145,490.34 = 69,625/x
  3. Step 3: Cross multiply
    105,403.24x = 145,490.34 × 69,625
  4. Step 4: Simplify right side
    105,403.24x = 10,129,764,922.50
  5. Step 5: Solve for x
    x = 10,129,764,922.50/105,403.24
  6. Step 6: Final answer
    x = 96,104.87

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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.