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Finding the Fourth Proportional to 141,207.40, 211,811.10 and 71,223.40

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Solution

The fourth proportional to 141,207.40, 211,811.10 and 71,223.40 is: 106,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,207.40 : 211,811.10 = 71,223.40 : x
  2. Step 2: Convert to fraction form
    141,207.40/211,811.10 = 71,223.40/x
  3. Step 3: Cross multiply
    141,207.40x = 211,811.10 × 71,223.40
  4. Step 4: Simplify right side
    141,207.40x = 15,085,906,699.74
  5. Step 5: Solve for x
    x = 15,085,906,699.74/141,207.40
  6. Step 6: Final answer
    x = 106,835.10

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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.