Home / 160,511.14-221,431.89-103,940.74

Finding the Fourth Proportional to 160,511.14, 221,431.89 and 103,940.74

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Solution

The fourth proportional to 160,511.14, 221,431.89 and 103,940.74 is: 143,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,511.14 : 221,431.89 = 103,940.74 : x
  2. Step 2: Convert to fraction form
    160,511.14/221,431.89 = 103,940.74/x
  3. Step 3: Cross multiply
    160,511.14x = 221,431.89 × 103,940.74
  4. Step 4: Simplify right side
    160,511.14x = 23,015,794,506.20
  5. Step 5: Solve for x
    x = 23,015,794,506.20/160,511.14
  6. Step 6: Final answer
    x = 143,390.64

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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.