Home / 212,325.18-318,490.20-72,094.74

Finding the Fourth Proportional to 212,325.18, 318,490.20 and 72,094.74

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Solution

The fourth proportional to 212,325.18, 318,490.20 and 72,094.74 is: 108,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,325.18 : 318,490.20 = 72,094.74 : x
  2. Step 2: Convert to fraction form
    212,325.18/318,490.20 = 72,094.74/x
  3. Step 3: Cross multiply
    212,325.18x = 318,490.20 × 72,094.74
  4. Step 4: Simplify right side
    212,325.18x = 22,961,468,161.55
  5. Step 5: Solve for x
    x = 22,961,468,161.55/212,325.18
  6. Step 6: Final answer
    x = 108,142.94

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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.