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Finding the Fourth Proportional to 230,137.68, 317,589.84 and 129,537.84

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Solution

The fourth proportional to 230,137.68, 317,589.84 and 129,537.84 is: 178,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,137.68 : 317,589.84 = 129,537.84 : x
  2. Step 2: Convert to fraction form
    230,137.68/317,589.84 = 129,537.84/x
  3. Step 3: Cross multiply
    230,137.68x = 317,589.84 × 129,537.84
  4. Step 4: Simplify right side
    230,137.68x = 41,139,901,879.55
  5. Step 5: Solve for x
    x = 41,139,901,879.55/230,137.68
  6. Step 6: Final answer
    x = 178,762.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.