Home / 208,143.28-287,211.72-117,488.08

Finding the Fourth Proportional to 208,143.28, 287,211.72 and 117,488.08

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Solution

The fourth proportional to 208,143.28, 287,211.72 and 117,488.08 is: 162,118.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,143.28 : 287,211.72 = 117,488.08 : x
  2. Step 2: Convert to fraction form
    208,143.28/287,211.72 = 117,488.08/x
  3. Step 3: Cross multiply
    208,143.28x = 287,211.72 × 117,488.08
  4. Step 4: Simplify right side
    208,143.28x = 33,743,953,536.30
  5. Step 5: Solve for x
    x = 33,743,953,536.30/208,143.28
  6. Step 6: Final answer
    x = 162,118.87

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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.