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Finding the Fourth Proportional to 188,958.32, 260,757.08 and 102,915.34

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Solution

The fourth proportional to 188,958.32, 260,757.08 and 102,915.34 is: 142,020.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,958.32 : 260,757.08 = 102,915.34 : x
  2. Step 2: Convert to fraction form
    188,958.32/260,757.08 = 102,915.34/x
  3. Step 3: Cross multiply
    188,958.32x = 260,757.08 × 102,915.34
  4. Step 4: Simplify right side
    188,958.32x = 26,835,903,545.61
  5. Step 5: Solve for x
    x = 26,835,903,545.61/188,958.32
  6. Step 6: Final answer
    x = 142,020.23

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1.5x scale

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.