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Finding the Fourth Proportional to 190,600, 262,855.80 and 118,986.64

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Solution

The fourth proportional to 190,600, 262,855.80 and 118,986.64 is: 164,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,600 : 262,855.80 = 118,986.64 : x
  2. Step 2: Convert to fraction form
    190,600/262,855.80 = 118,986.64/x
  3. Step 3: Cross multiply
    190,600x = 262,855.80 × 118,986.64
  4. Step 4: Simplify right side
    190,600x = 31,276,328,446.51
  5. Step 5: Solve for x
    x = 31,276,328,446.51/190,600
  6. Step 6: Final answer
    x = 164,094.06

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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.