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Finding the Fourth Proportional to 109,890.64, 164,903.64 and 43,319.44

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Solution

The fourth proportional to 109,890.64, 164,903.64 and 43,319.44 is: 65,005.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,890.64 : 164,903.64 = 43,319.44 : x
  2. Step 2: Convert to fraction form
    109,890.64/164,903.64 = 43,319.44/x
  3. Step 3: Cross multiply
    109,890.64x = 164,903.64 × 43,319.44
  4. Step 4: Simplify right side
    109,890.64x = 7,143,533,338.76
  5. Step 5: Solve for x
    x = 7,143,533,338.76/109,890.64
  6. Step 6: Final answer
    x = 65,005.84

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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.