Home / 205,911.41-309,066.86-99,370.35

Finding the Fourth Proportional to 205,911.41, 309,066.86 and 99,370.35

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Solution

The fourth proportional to 205,911.41, 309,066.86 and 99,370.35 is: 149,151.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,911.41 : 309,066.86 = 99,370.35 : x
  2. Step 2: Convert to fraction form
    205,911.41/309,066.86 = 99,370.35/x
  3. Step 3: Cross multiply
    205,911.41x = 309,066.86 × 99,370.35
  4. Step 4: Simplify right side
    205,911.41x = 30,712,082,167.99
  5. Step 5: Solve for x
    x = 30,712,082,167.99/205,911.41
  6. Step 6: Final answer
    x = 149,151.92

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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.