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Finding the Fourth Proportional to 188,365, 259,943.81 and 103,487.53

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Solution

The fourth proportional to 188,365, 259,943.81 and 103,487.53 is: 142,812.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,365 : 259,943.81 = 103,487.53 : x
  2. Step 2: Convert to fraction form
    188,365/259,943.81 = 103,487.53/x
  3. Step 3: Cross multiply
    188,365x = 259,943.81 × 103,487.53
  4. Step 4: Simplify right side
    188,365x = 26,900,942,318.25
  5. Step 5: Solve for x
    x = 26,900,942,318.25/188,365
  6. Step 6: Final answer
    x = 142,812.85

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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.