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Finding the Fourth Proportional to 132,709.60, 199,064.40 and 115,602.40

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Solution

The fourth proportional to 132,709.60, 199,064.40 and 115,602.40 is: 173,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,709.60 : 199,064.40 = 115,602.40 : x
  2. Step 2: Convert to fraction form
    132,709.60/199,064.40 = 115,602.40/x
  3. Step 3: Cross multiply
    132,709.60x = 199,064.40 × 115,602.40
  4. Step 4: Simplify right side
    132,709.60x = 23,012,322,394.56
  5. Step 5: Solve for x
    x = 23,012,322,394.56/132,709.60
  6. Step 6: Final answer
    x = 173,403.60

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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.