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Finding the Fourth Proportional to 137,840.64, 206,633.60 and 53,656.32

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Solution

The fourth proportional to 137,840.64, 206,633.60 and 53,656.32 is: 80,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,840.64 : 206,633.60 = 53,656.32 : x
  2. Step 2: Convert to fraction form
    137,840.64/206,633.60 = 53,656.32/x
  3. Step 3: Cross multiply
    137,840.64x = 206,633.60 × 53,656.32
  4. Step 4: Simplify right side
    137,840.64x = 11,087,198,564.35
  5. Step 5: Solve for x
    x = 11,087,198,564.35/137,840.64
  6. Step 6: Final answer
    x = 80,434.90

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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.