Home / 208,515.15-287,751.20-113,021.82

Finding the Fourth Proportional to 208,515.15, 287,751.20 and 113,021.82

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Solution

The fourth proportional to 208,515.15, 287,751.20 and 113,021.82 is: 155,970.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,515.15 : 287,751.20 = 113,021.82 : x
  2. Step 2: Convert to fraction form
    208,515.15/287,751.20 = 113,021.82/x
  3. Step 3: Cross multiply
    208,515.15x = 287,751.20 × 113,021.82
  4. Step 4: Simplify right side
    208,515.15x = 32,522,163,766.07
  5. Step 5: Solve for x
    x = 32,522,163,766.07/208,515.15
  6. Step 6: Final answer
    x = 155,970.27

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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.