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Finding the Fourth Proportional to 188,656.25, 282,915.86 and 103,330.45

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Solution

The fourth proportional to 188,656.25, 282,915.86 and 103,330.45 is: 154,958.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,656.25 : 282,915.86 = 103,330.45 : x
  2. Step 2: Convert to fraction form
    188,656.25/282,915.86 = 103,330.45/x
  3. Step 3: Cross multiply
    188,656.25x = 282,915.86 × 103,330.45
  4. Step 4: Simplify right side
    188,656.25x = 29,233,821,711.36
  5. Step 5: Solve for x
    x = 29,233,821,711.36/188,656.25
  6. Step 6: Final answer
    x = 154,958.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.