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Finding the Fourth Proportional to 112,489.68, 168,544.96 and 67,980.58

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Solution

The fourth proportional to 112,489.68, 168,544.96 and 67,980.58 is: 101,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.68 : 168,544.96 = 67,980.58 : x
  2. Step 2: Convert to fraction form
    112,489.68/168,544.96 = 67,980.58/x
  3. Step 3: Cross multiply
    112,489.68x = 168,544.96 × 67,980.58
  4. Step 4: Simplify right side
    112,489.68x = 11,457,784,136.88
  5. Step 5: Solve for x
    x = 11,457,784,136.88/112,489.68
  6. Step 6: Final answer
    x = 101,856.31

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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.