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Finding the Fourth Proportional to 209,701.56, 314,602.02 and 91,394.04

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Solution

The fourth proportional to 209,701.56, 314,602.02 and 91,394.04 is: 137,112.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,701.56 : 314,602.02 = 91,394.04 : x
  2. Step 2: Convert to fraction form
    209,701.56/314,602.02 = 91,394.04/x
  3. Step 3: Cross multiply
    209,701.56x = 314,602.02 × 91,394.04
  4. Step 4: Simplify right side
    209,701.56x = 28,752,749,599.96
  5. Step 5: Solve for x
    x = 28,752,749,599.96/209,701.56
  6. Step 6: Final answer
    x = 137,112.71

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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.