Home / 154,363.09-212,816.86-111,306.55

Finding the Fourth Proportional to 154,363.09, 212,816.86 and 111,306.55

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Solution

The fourth proportional to 154,363.09, 212,816.86 and 111,306.55 is: 153,455.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,363.09 : 212,816.86 = 111,306.55 : x
  2. Step 2: Convert to fraction form
    154,363.09/212,816.86 = 111,306.55/x
  3. Step 3: Cross multiply
    154,363.09x = 212,816.86 × 111,306.55
  4. Step 4: Simplify right side
    154,363.09x = 23,687,910,468.43
  5. Step 5: Solve for x
    x = 23,687,910,468.43/154,363.09
  6. Step 6: Final answer
    x = 153,455.79

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1.5x scale

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.