Home / 209,981.66-315,017.13-67,835.09

Finding the Fourth Proportional to 209,981.66, 315,017.13 and 67,835.09

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Solution

The fourth proportional to 209,981.66, 315,017.13 and 67,835.09 is: 101,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,981.66 : 315,017.13 = 67,835.09 : x
  2. Step 2: Convert to fraction form
    209,981.66/315,017.13 = 67,835.09/x
  3. Step 3: Cross multiply
    209,981.66x = 315,017.13 × 67,835.09
  4. Step 4: Simplify right side
    209,981.66x = 21,369,214,635.04
  5. Step 5: Solve for x
    x = 21,369,214,635.04/209,981.66
  6. Step 6: Final answer
    x = 101,767.06

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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.