Home / 109,729.40-164,495.55-43,214.90

Finding the Fourth Proportional to 109,729.40, 164,495.55 and 43,214.90

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Solution

The fourth proportional to 109,729.40, 164,495.55 and 43,214.90 is: 64,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,729.40 : 164,495.55 = 43,214.90 : x
  2. Step 2: Convert to fraction form
    109,729.40/164,495.55 = 43,214.90/x
  3. Step 3: Cross multiply
    109,729.40x = 164,495.55 × 43,214.90
  4. Step 4: Simplify right side
    109,729.40x = 7,108,658,743.70
  5. Step 5: Solve for x
    x = 7,108,658,743.70/109,729.40
  6. Step 6: Final answer
    x = 64,783.54

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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.