Home / 212,190.78-318,325.50-70,045.95

Finding the Fourth Proportional to 212,190.78, 318,325.50 and 70,045.95

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Solution

The fourth proportional to 212,190.78, 318,325.50 and 70,045.95 is: 105,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,190.78 : 318,325.50 = 70,045.95 : x
  2. Step 2: Convert to fraction form
    212,190.78/318,325.50 = 70,045.95/x
  3. Step 3: Cross multiply
    212,190.78x = 318,325.50 × 70,045.95
  4. Step 4: Simplify right side
    212,190.78x = 22,297,412,056.73
  5. Step 5: Solve for x
    x = 22,297,412,056.73/212,190.78
  6. Step 6: Final answer
    x = 105,081.91

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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.