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Finding the Fourth Proportional to 188,570.50, 260,227.29 and 113,143.30

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Solution

The fourth proportional to 188,570.50, 260,227.29 and 113,143.30 is: 156,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,570.50 : 260,227.29 = 113,143.30 : x
  2. Step 2: Convert to fraction form
    188,570.50/260,227.29 = 113,143.30/x
  3. Step 3: Cross multiply
    188,570.50x = 260,227.29 × 113,143.30
  4. Step 4: Simplify right side
    188,570.50x = 29,442,974,340.66
  5. Step 5: Solve for x
    x = 29,442,974,340.66/188,570.50
  6. Step 6: Final answer
    x = 156,137.75

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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.