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Finding the Fourth Proportional to 188,688.60, 260,380.86 and 103,803.48

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Solution

The fourth proportional to 188,688.60, 260,380.86 and 103,803.48 is: 143,243.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,688.60 : 260,380.86 = 103,803.48 : x
  2. Step 2: Convert to fraction form
    188,688.60/260,380.86 = 103,803.48/x
  3. Step 3: Cross multiply
    188,688.60x = 260,380.86 × 103,803.48
  4. Step 4: Simplify right side
    188,688.60x = 27,028,439,393.39
  5. Step 5: Solve for x
    x = 27,028,439,393.39/188,688.60
  6. Step 6: Final answer
    x = 143,243.63

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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.