Home / 201,981.50-278,732.97-111,337.55

Finding the Fourth Proportional to 201,981.50, 278,732.97 and 111,337.55

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Solution

The fourth proportional to 201,981.50, 278,732.97 and 111,337.55 is: 153,644.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,981.50 : 278,732.97 = 111,337.55 : x
  2. Step 2: Convert to fraction form
    201,981.50/278,732.97 = 111,337.55/x
  3. Step 3: Cross multiply
    201,981.50x = 278,732.97 × 111,337.55
  4. Step 4: Simplify right side
    201,981.50x = 31,033,445,984.02
  5. Step 5: Solve for x
    x = 31,033,445,984.02/201,981.50
  6. Step 6: Final answer
    x = 153,644.99

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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.