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Finding the Fourth Proportional to 111,826, 154,319.88 and 61,525

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Solution

The fourth proportional to 111,826, 154,319.88 and 61,525 is: 84,904.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,826 : 154,319.88 = 61,525 : x
  2. Step 2: Convert to fraction form
    111,826/154,319.88 = 61,525/x
  3. Step 3: Cross multiply
    111,826x = 154,319.88 × 61,525
  4. Step 4: Simplify right side
    111,826x = 9,494,530,617
  5. Step 5: Solve for x
    x = 9,494,530,617/111,826
  6. Step 6: Final answer
    x = 84,904.50

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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.