Home / 208,212.10-287,281-122,179.16

Finding the Fourth Proportional to 208,212.10, 287,281 and 122,179.16

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Solution

The fourth proportional to 208,212.10, 287,281 and 122,179.16 is: 168,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,212.10 : 287,281 = 122,179.16 : x
  2. Step 2: Convert to fraction form
    208,212.10/287,281 = 122,179.16/x
  3. Step 3: Cross multiply
    208,212.10x = 287,281 × 122,179.16
  4. Step 4: Simplify right side
    208,212.10x = 35,099,751,263.96
  5. Step 5: Solve for x
    x = 35,099,751,263.96/208,212.10
  6. Step 6: Final answer
    x = 168,576.90

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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.