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Finding the Fourth Proportional to 141,814.05, 212,720.85 and 65,871.06

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Solution

The fourth proportional to 141,814.05, 212,720.85 and 65,871.06 is: 98,806.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,814.05 : 212,720.85 = 65,871.06 : x
  2. Step 2: Convert to fraction form
    141,814.05/212,720.85 = 65,871.06/x
  3. Step 3: Cross multiply
    141,814.05x = 212,720.85 × 65,871.06
  4. Step 4: Simplify right side
    141,814.05x = 14,012,147,873.60
  5. Step 5: Solve for x
    x = 14,012,147,873.60/141,814.05
  6. Step 6: Final answer
    x = 98,806.49

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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.