Home / 208,619.52-287,889.84-113,123.76

Finding the Fourth Proportional to 208,619.52, 287,889.84 and 113,123.76

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Solution

The fourth proportional to 208,619.52, 287,889.84 and 113,123.76 is: 156,108.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,619.52 : 287,889.84 = 113,123.76 : x
  2. Step 2: Convert to fraction form
    208,619.52/287,889.84 = 113,123.76/x
  3. Step 3: Cross multiply
    208,619.52x = 287,889.84 × 113,123.76
  4. Step 4: Simplify right side
    208,619.52x = 32,567,181,166.60
  5. Step 5: Solve for x
    x = 32,567,181,166.60/208,619.52
  6. Step 6: Final answer
    x = 156,108.02

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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.