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Finding the Fourth Proportional to 141,243, 211,684.32 and 66,197.64

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Solution

The fourth proportional to 141,243, 211,684.32 and 66,197.64 is: 99,212.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,243 : 211,684.32 = 66,197.64 : x
  2. Step 2: Convert to fraction form
    141,243/211,684.32 = 66,197.64/x
  3. Step 3: Cross multiply
    141,243x = 211,684.32 × 66,197.64
  4. Step 4: Simplify right side
    141,243x = 14,013,002,409.00
  5. Step 5: Solve for x
    x = 14,013,002,409.00/141,243
  6. Step 6: Final answer
    x = 99,212.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.