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Finding the Fourth Proportional to 212,074.84, 318,103.95 and 71,833.46

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Solution

The fourth proportional to 212,074.84, 318,103.95 and 71,833.46 is: 107,747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,074.84 : 318,103.95 = 71,833.46 : x
  2. Step 2: Convert to fraction form
    212,074.84/318,103.95 = 71,833.46/x
  3. Step 3: Cross multiply
    212,074.84x = 318,103.95 × 71,833.46
  4. Step 4: Simplify right side
    212,074.84x = 22,850,507,368.17
  5. Step 5: Solve for x
    x = 22,850,507,368.17/212,074.84
  6. Step 6: Final answer
    x = 107,747.38

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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.