Home / 212,633.45-318,952.52-91,037.63

Finding the Fourth Proportional to 212,633.45, 318,952.52 and 91,037.63

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Solution

The fourth proportional to 212,633.45, 318,952.52 and 91,037.63 is: 136,557.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,633.45 : 318,952.52 = 91,037.63 : x
  2. Step 2: Convert to fraction form
    212,633.45/318,952.52 = 91,037.63/x
  3. Step 3: Cross multiply
    212,633.45x = 318,952.52 × 91,037.63
  4. Step 4: Simplify right side
    212,633.45x = 29,036,679,453.38
  5. Step 5: Solve for x
    x = 29,036,679,453.38/212,633.45
  6. Step 6: Final answer
    x = 136,557.44

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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.