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Finding the Fourth Proportional to 188,714.70, 260,396.64 and 108,126.72

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Solution

The fourth proportional to 188,714.70, 260,396.64 and 108,126.72 is: 149,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,714.70 : 260,396.64 = 108,126.72 : x
  2. Step 2: Convert to fraction form
    188,714.70/260,396.64 = 108,126.72/x
  3. Step 3: Cross multiply
    188,714.70x = 260,396.64 × 108,126.72
  4. Step 4: Simplify right side
    188,714.70x = 28,155,834,582.22
  5. Step 5: Solve for x
    x = 28,155,834,582.22/188,714.70
  6. Step 6: Final answer
    x = 149,197.89

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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.