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Finding the Fourth Proportional to 164,391.58, 226,847.46 and 100,720.72

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Solution

The fourth proportional to 164,391.58, 226,847.46 and 100,720.72 is: 138,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,391.58 : 226,847.46 = 100,720.72 : x
  2. Step 2: Convert to fraction form
    164,391.58/226,847.46 = 100,720.72/x
  3. Step 3: Cross multiply
    164,391.58x = 226,847.46 × 100,720.72
  4. Step 4: Simplify right side
    164,391.58x = 22,848,239,501.37
  5. Step 5: Solve for x
    x = 22,848,239,501.37/164,391.58
  6. Step 6: Final answer
    x = 138,986.68

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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.