Home / 109,231.26-163,636.96-66,988.16

Finding the Fourth Proportional to 109,231.26, 163,636.96 and 66,988.16

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Solution

The fourth proportional to 109,231.26, 163,636.96 and 66,988.16 is: 100,353.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,231.26 : 163,636.96 = 66,988.16 : x
  2. Step 2: Convert to fraction form
    109,231.26/163,636.96 = 66,988.16/x
  3. Step 3: Cross multiply
    109,231.26x = 163,636.96 × 66,988.16
  4. Step 4: Simplify right side
    109,231.26x = 10,961,738,858.39
  5. Step 5: Solve for x
    x = 10,961,738,858.39/109,231.26
  6. Step 6: Final answer
    x = 100,353.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.