Home / 208,566.72-287,818.32-117,921.12

Finding the Fourth Proportional to 208,566.72, 287,818.32 and 117,921.12

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Solution

The fourth proportional to 208,566.72, 287,818.32 and 117,921.12 is: 162,729.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,566.72 : 287,818.32 = 117,921.12 : x
  2. Step 2: Convert to fraction form
    208,566.72/287,818.32 = 117,921.12/x
  3. Step 3: Cross multiply
    208,566.72x = 287,818.32 × 117,921.12
  4. Step 4: Simplify right side
    208,566.72x = 33,939,858,650.92
  5. Step 5: Solve for x
    x = 33,939,858,650.92/208,566.72
  6. Step 6: Final answer
    x = 162,729.02

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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.