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Finding the Fourth Proportional to 188,790.52, 260,536.08 and 103,912.80

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Solution

The fourth proportional to 188,790.52, 260,536.08 and 103,912.80 is: 143,402.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,790.52 : 260,536.08 = 103,912.80 : x
  2. Step 2: Convert to fraction form
    188,790.52/260,536.08 = 103,912.80/x
  3. Step 3: Cross multiply
    188,790.52x = 260,536.08 × 103,912.80
  4. Step 4: Simplify right side
    188,790.52x = 27,073,033,573.82
  5. Step 5: Solve for x
    x = 27,073,033,573.82/188,790.52
  6. Step 6: Final answer
    x = 143,402.51

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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.