Home / 212,038,951.52-318,049,175.88-66,469,191.60

Finding the Fourth Proportional to 212,038,951.52, 318,049,175.88 and 66,469,191.60

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Solution

The fourth proportional to 212,038,951.52, 318,049,175.88 and 66,469,191.60 is: 99,700,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,038,951.52 : 318,049,175.88 = 66,469,191.60 : x
  2. Step 2: Convert to fraction form
    212,038,951.52/318,049,175.88 = 66,469,191.60/x
  3. Step 3: Cross multiply
    212,038,951.52x = 318,049,175.88 × 66,469,191.60
  4. Step 4: Simplify right side
    212,038,951.52x = 21,140,471,609,789,820
  5. Step 5: Solve for x
    x = 21,140,471,609,789,820/212,038,951.52
  6. Step 6: Final answer
    x = 99,700,887.31

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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.