Home / 105,633.24-145,772.64-63,191.70

Finding the Fourth Proportional to 105,633.24, 145,772.64 and 63,191.70

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Solution

The fourth proportional to 105,633.24, 145,772.64 and 63,191.70 is: 87,203.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.24 : 145,772.64 = 63,191.70 : x
  2. Step 2: Convert to fraction form
    105,633.24/145,772.64 = 63,191.70/x
  3. Step 3: Cross multiply
    105,633.24x = 145,772.64 × 63,191.70
  4. Step 4: Simplify right side
    105,633.24x = 9,211,620,935.09
  5. Step 5: Solve for x
    x = 9,211,620,935.09/105,633.24
  6. Step 6: Final answer
    x = 87,203.81

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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.