Home / 123,431.40-185,147.10-40,333.80

Finding the Fourth Proportional to 123,431.40, 185,147.10 and 40,333.80

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Solution

The fourth proportional to 123,431.40, 185,147.10 and 40,333.80 is: 60,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,431.40 : 185,147.10 = 40,333.80 : x
  2. Step 2: Convert to fraction form
    123,431.40/185,147.10 = 40,333.80/x
  3. Step 3: Cross multiply
    123,431.40x = 185,147.10 × 40,333.80
  4. Step 4: Simplify right side
    123,431.40x = 7,467,686,101.98
  5. Step 5: Solve for x
    x = 7,467,686,101.98/123,431.40
  6. Step 6: Final answer
    x = 60,500.70

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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.