Home / 208,117.26-312,049.47-81,605.93

Finding the Fourth Proportional to 208,117.26, 312,049.47 and 81,605.93

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Solution

The fourth proportional to 208,117.26, 312,049.47 and 81,605.93 is: 122,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.26 : 312,049.47 = 81,605.93 : x
  2. Step 2: Convert to fraction form
    208,117.26/312,049.47 = 81,605.93/x
  3. Step 3: Cross multiply
    208,117.26x = 312,049.47 × 81,605.93
  4. Step 4: Simplify right side
    208,117.26x = 25,465,087,205.36
  5. Step 5: Solve for x
    x = 25,465,087,205.36/208,117.26
  6. Step 6: Final answer
    x = 122,359.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.