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Finding the Fourth Proportional to 141,967.39, 212,904.99 and 47,172.12

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Solution

The fourth proportional to 141,967.39, 212,904.99 and 47,172.12 is: 70,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,967.39 : 212,904.99 = 47,172.12 : x
  2. Step 2: Convert to fraction form
    141,967.39/212,904.99 = 47,172.12/x
  3. Step 3: Cross multiply
    141,967.39x = 212,904.99 × 47,172.12
  4. Step 4: Simplify right side
    141,967.39x = 10,043,178,761.59
  5. Step 5: Solve for x
    x = 10,043,178,761.59/141,967.39
  6. Step 6: Final answer
    x = 70,742.86

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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.