Home / 205,834.50-284,031.90-115,185.78

Finding the Fourth Proportional to 205,834.50, 284,031.90 and 115,185.78

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Solution

The fourth proportional to 205,834.50, 284,031.90 and 115,185.78 is: 158,945.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,834.50 : 284,031.90 = 115,185.78 : x
  2. Step 2: Convert to fraction form
    205,834.50/284,031.90 = 115,185.78/x
  3. Step 3: Cross multiply
    205,834.50x = 284,031.90 × 115,185.78
  4. Step 4: Simplify right side
    205,834.50x = 32,716,435,946.38
  5. Step 5: Solve for x
    x = 32,716,435,946.38/205,834.50
  6. Step 6: Final answer
    x = 158,945.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.