Home / 208,072.48-312,004.80-67,813.60

Finding the Fourth Proportional to 208,072.48, 312,004.80 and 67,813.60

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Solution

The fourth proportional to 208,072.48, 312,004.80 and 67,813.60 is: 101,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,072.48 : 312,004.80 = 67,813.60 : x
  2. Step 2: Convert to fraction form
    208,072.48/312,004.80 = 67,813.60/x
  3. Step 3: Cross multiply
    208,072.48x = 312,004.80 × 67,813.60
  4. Step 4: Simplify right side
    208,072.48x = 21,158,168,705.28
  5. Step 5: Solve for x
    x = 21,158,168,705.28/208,072.48
  6. Step 6: Final answer
    x = 101,686.53

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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.