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Finding the Fourth Proportional to 188,894.21, 260,615.45 and 107,209.13

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Solution

The fourth proportional to 188,894.21, 260,615.45 and 107,209.13 is: 147,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,894.21 : 260,615.45 = 107,209.13 : x
  2. Step 2: Convert to fraction form
    188,894.21/260,615.45 = 107,209.13/x
  3. Step 3: Cross multiply
    188,894.21x = 260,615.45 × 107,209.13
  4. Step 4: Simplify right side
    188,894.21x = 27,940,354,624.00
  5. Step 5: Solve for x
    x = 27,940,354,624.00/188,894.21
  6. Step 6: Final answer
    x = 147,915.36

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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.