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Finding the Fourth Proportional to 188,499.92, 260,128.36 and 103,616.08

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Solution

The fourth proportional to 188,499.92, 260,128.36 and 103,616.08 is: 142,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,499.92 : 260,128.36 = 103,616.08 : x
  2. Step 2: Convert to fraction form
    188,499.92/260,128.36 = 103,616.08/x
  3. Step 3: Cross multiply
    188,499.92x = 260,128.36 × 103,616.08
  4. Step 4: Simplify right side
    188,499.92x = 26,953,480,960.03
  5. Step 5: Solve for x
    x = 26,953,480,960.03/188,499.92
  6. Step 6: Final answer
    x = 142,989.35

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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.