Home / 208,729.09-313,130.83-66,605.55

Finding the Fourth Proportional to 208,729.09, 313,130.83 and 66,605.55

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Solution

The fourth proportional to 208,729.09, 313,130.83 and 66,605.55 is: 99,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,729.09 : 313,130.83 = 66,605.55 : x
  2. Step 2: Convert to fraction form
    208,729.09/313,130.83 = 66,605.55/x
  3. Step 3: Cross multiply
    208,729.09x = 313,130.83 × 66,605.55
  4. Step 4: Simplify right side
    208,729.09x = 20,856,251,154.11
  5. Step 5: Solve for x
    x = 20,856,251,154.11/208,729.09
  6. Step 6: Final answer
    x = 99,920.19

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1.5x scale

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.