Home / 208,211.10-287,279.62-122,178.16

Finding the Fourth Proportional to 208,211.10, 287,279.62 and 122,178.16

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Solution

The fourth proportional to 208,211.10, 287,279.62 and 122,178.16 is: 168,575.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,211.10 : 287,279.62 = 122,178.16 : x
  2. Step 2: Convert to fraction form
    208,211.10/287,279.62 = 122,178.16/x
  3. Step 3: Cross multiply
    208,211.10x = 287,279.62 × 122,178.16
  4. Step 4: Simplify right side
    208,211.10x = 35,099,295,377.10
  5. Step 5: Solve for x
    x = 35,099,295,377.10/208,211.10
  6. Step 6: Final answer
    x = 168,575.52

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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.