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Finding the Fourth Proportional to 188,572.17, 260,234.15 and 103,689.21

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Solution

The fourth proportional to 188,572.17, 260,234.15 and 103,689.21 is: 143,093.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,572.17 : 260,234.15 = 103,689.21 : x
  2. Step 2: Convert to fraction form
    188,572.17/260,234.15 = 103,689.21/x
  3. Step 3: Cross multiply
    188,572.17x = 260,234.15 × 103,689.21
  4. Step 4: Simplify right side
    188,572.17x = 26,983,473,428.52
  5. Step 5: Solve for x
    x = 26,983,473,428.52/188,572.17
  6. Step 6: Final answer
    x = 143,093.61

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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.