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Finding the Fourth Proportional to 212,137.97, 292,813.65 and 139,596.80

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Solution

The fourth proportional to 212,137.97, 292,813.65 and 139,596.80 is: 192,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,137.97 : 292,813.65 = 139,596.80 : x
  2. Step 2: Convert to fraction form
    212,137.97/292,813.65 = 139,596.80/x
  3. Step 3: Cross multiply
    212,137.97x = 292,813.65 × 139,596.80
  4. Step 4: Simplify right side
    212,137.97x = 40,875,848,536.32
  5. Step 5: Solve for x
    x = 40,875,848,536.32/212,137.97
  6. Step 6: Final answer
    x = 192,685.21

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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.