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Finding the Fourth Proportional to 188,503.59, 260,135.24 and 103,621.17

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Solution

The fourth proportional to 188,503.59, 260,135.24 and 103,621.17 is: 142,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,503.59 : 260,135.24 = 103,621.17 : x
  2. Step 2: Convert to fraction form
    188,503.59/260,135.24 = 103,621.17/x
  3. Step 3: Cross multiply
    188,503.59x = 260,135.24 × 103,621.17
  4. Step 4: Simplify right side
    188,503.59x = 26,955,517,408.93
  5. Step 5: Solve for x
    x = 26,955,517,408.93/188,503.59
  6. Step 6: Final answer
    x = 142,997.37

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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.