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Finding the Fourth Proportional to 188,502.35, 260,126.64 and 103,618.80

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Solution

The fourth proportional to 188,502.35, 260,126.64 and 103,618.80 is: 142,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.35 : 260,126.64 = 103,618.80 : x
  2. Step 2: Convert to fraction form
    188,502.35/260,126.64 = 103,618.80/x
  3. Step 3: Cross multiply
    188,502.35x = 260,126.64 × 103,618.80
  4. Step 4: Simplify right side
    188,502.35x = 26,954,010,284.83
  5. Step 5: Solve for x
    x = 26,954,010,284.83/188,502.35
  6. Step 6: Final answer
    x = 142,990.32

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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.