Home / 103,965.14-143,473.38-63,664.20

Finding the Fourth Proportional to 103,965.14, 143,473.38 and 63,664.20

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Solution

The fourth proportional to 103,965.14, 143,473.38 and 63,664.20 is: 87,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,965.14 : 143,473.38 = 63,664.20 : x
  2. Step 2: Convert to fraction form
    103,965.14/143,473.38 = 63,664.20/x
  3. Step 3: Cross multiply
    103,965.14x = 143,473.38 × 63,664.20
  4. Step 4: Simplify right side
    103,965.14x = 9,134,117,959.00
  5. Step 5: Solve for x
    x = 9,134,117,959.00/103,965.14
  6. Step 6: Final answer
    x = 87,857.51

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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.