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Finding the Fourth Proportional to 112,205.12, 154,843.08 and 61,904.12

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Solution

The fourth proportional to 112,205.12, 154,843.08 and 61,904.12 is: 85,427.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,205.12 : 154,843.08 = 61,904.12 : x
  2. Step 2: Convert to fraction form
    112,205.12/154,843.08 = 61,904.12/x
  3. Step 3: Cross multiply
    112,205.12x = 154,843.08 × 61,904.12
  4. Step 4: Simplify right side
    112,205.12x = 9,585,424,605.49
  5. Step 5: Solve for x
    x = 9,585,424,605.49/112,205.12
  6. Step 6: Final answer
    x = 85,427.69

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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.