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Finding the Fourth Proportional to 212,106.65, 318,092.36 and 69,925.43

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Solution

The fourth proportional to 212,106.65, 318,092.36 and 69,925.43 is: 104,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,106.65 : 318,092.36 = 69,925.43 : x
  2. Step 2: Convert to fraction form
    212,106.65/318,092.36 = 69,925.43/x
  3. Step 3: Cross multiply
    212,106.65x = 318,092.36 × 69,925.43
  4. Step 4: Simplify right side
    212,106.65x = 22,242,743,112.63
  5. Step 5: Solve for x
    x = 22,242,743,112.63/212,106.65
  6. Step 6: Final answer
    x = 104,865.85

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1.5x scale

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.