Home / 99,779.54-149,589.83-57,611.78

Finding the Fourth Proportional to 99,779.54, 149,589.83 and 57,611.78

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Solution

The fourth proportional to 99,779.54, 149,589.83 and 57,611.78 is: 86,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,779.54 : 149,589.83 = 57,611.78 : x
  2. Step 2: Convert to fraction form
    99,779.54/149,589.83 = 57,611.78/x
  3. Step 3: Cross multiply
    99,779.54x = 149,589.83 × 57,611.78
  4. Step 4: Simplify right side
    99,779.54x = 8,618,136,462.11
  5. Step 5: Solve for x
    x = 8,618,136,462.11/99,779.54
  6. Step 6: Final answer
    x = 86,371.78

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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.