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Finding the Fourth Proportional to 104,078.64, 143,629.80 and 63,231.12

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Solution

The fourth proportional to 104,078.64, 143,629.80 and 63,231.12 is: 87,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,078.64 : 143,629.80 = 63,231.12 : x
  2. Step 2: Convert to fraction form
    104,078.64/143,629.80 = 63,231.12/x
  3. Step 3: Cross multiply
    104,078.64x = 143,629.80 × 63,231.12
  4. Step 4: Simplify right side
    104,078.64x = 9,081,873,119.38
  5. Step 5: Solve for x
    x = 9,081,873,119.38/104,078.64
  6. Step 6: Final answer
    x = 87,259.72

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1.5x scale

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.