Home / 105,496.43-145,609.85-69,687.95

Finding the Fourth Proportional to 105,496.43, 145,609.85 and 69,687.95

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Solution

The fourth proportional to 105,496.43, 145,609.85 and 69,687.95 is: 96,185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,496.43 : 145,609.85 = 69,687.95 : x
  2. Step 2: Convert to fraction form
    105,496.43/145,609.85 = 69,687.95/x
  3. Step 3: Cross multiply
    105,496.43x = 145,609.85 × 69,687.95
  4. Step 4: Simplify right side
    105,496.43x = 10,147,251,392.48
  5. Step 5: Solve for x
    x = 10,147,251,392.48/105,496.43
  6. Step 6: Final answer
    x = 96,185.74

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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.