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Finding the Fourth Proportional to 188,416.32, 260,032.80 and 107,855.28

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Solution

The fourth proportional to 188,416.32, 260,032.80 and 107,855.28 is: 148,850.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,416.32 : 260,032.80 = 107,855.28 : x
  2. Step 2: Convert to fraction form
    188,416.32/260,032.80 = 107,855.28/x
  3. Step 3: Cross multiply
    188,416.32x = 260,032.80 × 107,855.28
  4. Step 4: Simplify right side
    188,416.32x = 28,045,910,453.18
  5. Step 5: Solve for x
    x = 28,045,910,453.18/188,416.32
  6. Step 6: Final answer
    x = 148,850.75

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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.