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Finding the Fourth Proportional to 212,080.67, 318,168.08 and 69,970.02

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Solution

The fourth proportional to 212,080.67, 318,168.08 and 69,970.02 is: 104,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,080.67 : 318,168.08 = 69,970.02 : x
  2. Step 2: Convert to fraction form
    212,080.67/318,168.08 = 69,970.02/x
  3. Step 3: Cross multiply
    212,080.67x = 318,168.08 × 69,970.02
  4. Step 4: Simplify right side
    212,080.67x = 22,262,226,920.96
  5. Step 5: Solve for x
    x = 22,262,226,920.96/212,080.67
  6. Step 6: Final answer
    x = 104,970.56

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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.