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Finding the Fourth Proportional to 211,672.36, 292,120.98 and 139,927.96

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Solution

The fourth proportional to 211,672.36, 292,120.98 and 139,927.96 is: 193,109.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,672.36 : 292,120.98 = 139,927.96 : x
  2. Step 2: Convert to fraction form
    211,672.36/292,120.98 = 139,927.96/x
  3. Step 3: Cross multiply
    211,672.36x = 292,120.98 × 139,927.96
  4. Step 4: Simplify right side
    211,672.36x = 40,875,892,804.60
  5. Step 5: Solve for x
    x = 40,875,892,804.60/211,672.36
  6. Step 6: Final answer
    x = 193,109.26

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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.