Home / 109,836.81-151,513.80-63,891.28

Finding the Fourth Proportional to 109,836.81, 151,513.80 and 63,891.28

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Solution

The fourth proportional to 109,836.81, 151,513.80 and 63,891.28 is: 88,134.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,836.81 : 151,513.80 = 63,891.28 : x
  2. Step 2: Convert to fraction form
    109,836.81/151,513.80 = 63,891.28/x
  3. Step 3: Cross multiply
    109,836.81x = 151,513.80 × 63,891.28
  4. Step 4: Simplify right side
    109,836.81x = 9,680,410,109.96
  5. Step 5: Solve for x
    x = 9,680,410,109.96/109,836.81
  6. Step 6: Final answer
    x = 88,134.48

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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.