Home / 208,971.86-288,427.08-137,358.54

Finding the Fourth Proportional to 208,971.86, 288,427.08 and 137,358.54

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Solution

The fourth proportional to 208,971.86, 288,427.08 and 137,358.54 is: 189,584.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,971.86 : 288,427.08 = 137,358.54 : x
  2. Step 2: Convert to fraction form
    208,971.86/288,427.08 = 137,358.54/x
  3. Step 3: Cross multiply
    208,971.86x = 288,427.08 × 137,358.54
  4. Step 4: Simplify right side
    208,971.86x = 39,617,922,605.26
  5. Step 5: Solve for x
    x = 39,617,922,605.26/208,971.86
  6. Step 6: Final answer
    x = 189,584.96

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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.