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Finding the Fourth Proportional to 188,687.60, 260,379.48 and 103,802.48

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Solution

The fourth proportional to 188,687.60, 260,379.48 and 103,802.48 is: 143,242.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,687.60 : 260,379.48 = 103,802.48 : x
  2. Step 2: Convert to fraction form
    188,687.60/260,379.48 = 103,802.48/x
  3. Step 3: Cross multiply
    188,687.60x = 260,379.48 × 103,802.48
  4. Step 4: Simplify right side
    188,687.60x = 27,028,035,765.11
  5. Step 5: Solve for x
    x = 27,028,035,765.11/188,687.60
  6. Step 6: Final answer
    x = 143,242.25

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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.