Home / 208,918.25-313,373.81-66,762.50

Finding the Fourth Proportional to 208,918.25, 313,373.81 and 66,762.50

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Solution

The fourth proportional to 208,918.25, 313,373.81 and 66,762.50 is: 100,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,918.25 : 313,373.81 = 66,762.50 : x
  2. Step 2: Convert to fraction form
    208,918.25/313,373.81 = 66,762.50/x
  3. Step 3: Cross multiply
    208,918.25x = 313,373.81 × 66,762.50
  4. Step 4: Simplify right side
    208,918.25x = 20,921,617,590.16
  5. Step 5: Solve for x
    x = 20,921,617,590.16/208,918.25
  6. Step 6: Final answer
    x = 100,142.60

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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.