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Finding the Fourth Proportional to 188,442.75, 260,051.13 and 103,560.42

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Solution

The fourth proportional to 188,442.75, 260,051.13 and 103,560.42 is: 142,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,442.75 : 260,051.13 = 103,560.42 : x
  2. Step 2: Convert to fraction form
    188,442.75/260,051.13 = 103,560.42/x
  3. Step 3: Cross multiply
    188,442.75x = 260,051.13 × 103,560.42
  4. Step 4: Simplify right side
    188,442.75x = 26,931,004,244.27
  5. Step 5: Solve for x
    x = 26,931,004,244.27/188,442.75
  6. Step 6: Final answer
    x = 142,913.45

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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.