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Finding the Fourth Proportional to 188,797.80, 260,538.96 and 103,913.04

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Solution

The fourth proportional to 188,797.80, 260,538.96 and 103,913.04 is: 143,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,797.80 : 260,538.96 = 103,913.04 : x
  2. Step 2: Convert to fraction form
    188,797.80/260,538.96 = 103,913.04/x
  3. Step 3: Cross multiply
    188,797.80x = 260,538.96 × 103,913.04
  4. Step 4: Simplify right side
    188,797.80x = 27,073,395,372.04
  5. Step 5: Solve for x
    x = 27,073,395,372.04/188,797.80
  6. Step 6: Final answer
    x = 143,398.89

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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.