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Finding the Fourth Proportional to 141,885.84, 212,891.45 and 74,401.77

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Solution

The fourth proportional to 141,885.84, 212,891.45 and 74,401.77 is: 111,635.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,885.84 : 212,891.45 = 74,401.77 : x
  2. Step 2: Convert to fraction form
    141,885.84/212,891.45 = 74,401.77/x
  3. Step 3: Cross multiply
    141,885.84x = 212,891.45 × 74,401.77
  4. Step 4: Simplify right side
    141,885.84x = 15,839,500,325.86
  5. Step 5: Solve for x
    x = 15,839,500,325.86/141,885.84
  6. Step 6: Final answer
    x = 111,635.53

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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.