Home / 208,221.15-287,318.79-122,148.73

Finding the Fourth Proportional to 208,221.15, 287,318.79 and 122,148.73

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Solution

The fourth proportional to 208,221.15, 287,318.79 and 122,148.73 is: 168,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,221.15 : 287,318.79 = 122,148.73 : x
  2. Step 2: Convert to fraction form
    208,221.15/287,318.79 = 122,148.73/x
  3. Step 3: Cross multiply
    208,221.15x = 287,318.79 × 122,148.73
  4. Step 4: Simplify right side
    208,221.15x = 35,095,623,974.60
  5. Step 5: Solve for x
    x = 35,095,623,974.60/208,221.15
  6. Step 6: Final answer
    x = 168,549.76

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1.5x scale

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.