Home / 208,268.52-287,438.82-127,743.72

Finding the Fourth Proportional to 208,268.52, 287,438.82 and 127,743.72

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Solution

The fourth proportional to 208,268.52, 287,438.82 and 127,743.72 is: 176,303.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,268.52 : 287,438.82 = 127,743.72 : x
  2. Step 2: Convert to fraction form
    208,268.52/287,438.82 = 127,743.72/x
  3. Step 3: Cross multiply
    208,268.52x = 287,438.82 × 127,743.72
  4. Step 4: Simplify right side
    208,268.52x = 36,718,504,139.21
  5. Step 5: Solve for x
    x = 36,718,504,139.21/208,268.52
  6. Step 6: Final answer
    x = 176,303.67

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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.