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Finding the Fourth Proportional to 188,502.85, 260,127.33 and 103,619.30

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Solution

The fourth proportional to 188,502.85, 260,127.33 and 103,619.30 is: 142,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.85 : 260,127.33 = 103,619.30 : x
  2. Step 2: Convert to fraction form
    188,502.85/260,127.33 = 103,619.30/x
  3. Step 3: Cross multiply
    188,502.85x = 260,127.33 × 103,619.30
  4. Step 4: Simplify right side
    188,502.85x = 26,954,211,845.47
  5. Step 5: Solve for x
    x = 26,954,211,845.47/188,502.85
  6. Step 6: Final answer
    x = 142,991.01

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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.