Home / 208,104.28-287,185.24-122,045.72

Finding the Fourth Proportional to 208,104.28, 287,185.24 and 122,045.72

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Solution

The fourth proportional to 208,104.28, 287,185.24 and 122,045.72 is: 168,423.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,104.28 : 287,185.24 = 122,045.72 : x
  2. Step 2: Convert to fraction form
    208,104.28/287,185.24 = 122,045.72/x
  3. Step 3: Cross multiply
    208,104.28x = 287,185.24 × 122,045.72
  4. Step 4: Simplify right side
    208,104.28x = 35,049,729,389.17
  5. Step 5: Solve for x
    x = 35,049,729,389.17/208,104.28
  6. Step 6: Final answer
    x = 168,423.88

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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.