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Finding the Fourth Proportional to 188,873.56, 260,649.66 and 103,995.28

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Solution

The fourth proportional to 188,873.56, 260,649.66 and 103,995.28 is: 143,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,873.56 : 260,649.66 = 103,995.28 : x
  2. Step 2: Convert to fraction form
    188,873.56/260,649.66 = 103,995.28/x
  3. Step 3: Cross multiply
    188,873.56x = 260,649.66 × 103,995.28
  4. Step 4: Simplify right side
    188,873.56x = 27,106,334,373.60
  5. Step 5: Solve for x
    x = 27,106,334,373.60/188,873.56
  6. Step 6: Final answer
    x = 143,515.77

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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.