Home / 156,993.99-235,458-51,788.31

Finding the Fourth Proportional to 156,993.99, 235,458 and 51,788.31

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Solution

The fourth proportional to 156,993.99, 235,458 and 51,788.31 is: 77,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,993.99 : 235,458 = 51,788.31 : x
  2. Step 2: Convert to fraction form
    156,993.99/235,458 = 51,788.31/x
  3. Step 3: Cross multiply
    156,993.99x = 235,458 × 51,788.31
  4. Step 4: Simplify right side
    156,993.99x = 12,193,971,895.98
  5. Step 5: Solve for x
    x = 12,193,971,895.98/156,993.99
  6. Step 6: Final answer
    x = 77,671.58

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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.