Home / 103,965.64-143,474.07-63,664.71

Finding the Fourth Proportional to 103,965.64, 143,474.07 and 63,664.71

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Solution

The fourth proportional to 103,965.64, 143,474.07 and 63,664.71 is: 87,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,965.64 : 143,474.07 = 63,664.71 : x
  2. Step 2: Convert to fraction form
    103,965.64/143,474.07 = 63,664.71/x
  3. Step 3: Cross multiply
    103,965.64x = 143,474.07 × 63,664.71
  4. Step 4: Simplify right side
    103,965.64x = 9,134,235,059.07
  5. Step 5: Solve for x
    x = 9,134,235,059.07/103,965.64
  6. Step 6: Final answer
    x = 87,858.21

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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.