Home / 112,020.12-154,589.58-61,719.12

Finding the Fourth Proportional to 112,020.12, 154,589.58 and 61,719.12

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Solution

The fourth proportional to 112,020.12, 154,589.58 and 61,719.12 is: 85,173.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,020.12 : 154,589.58 = 61,719.12 : x
  2. Step 2: Convert to fraction form
    112,020.12/154,589.58 = 61,719.12/x
  3. Step 3: Cross multiply
    112,020.12x = 154,589.58 × 61,719.12
  4. Step 4: Simplify right side
    112,020.12x = 9,541,132,838.77
  5. Step 5: Solve for x
    x = 9,541,132,838.77/112,020.12
  6. Step 6: Final answer
    x = 85,173.39

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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.