Home / 103,944.09-143,443.20-56,197.78

Finding the Fourth Proportional to 103,944.09, 143,443.20 and 56,197.78

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Solution

The fourth proportional to 103,944.09, 143,443.20 and 56,197.78 is: 77,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,944.09 : 143,443.20 = 56,197.78 : x
  2. Step 2: Convert to fraction form
    103,944.09/143,443.20 = 56,197.78/x
  3. Step 3: Cross multiply
    103,944.09x = 143,443.20 × 56,197.78
  4. Step 4: Simplify right side
    103,944.09x = 8,061,189,396.10
  5. Step 5: Solve for x
    x = 8,061,189,396.10/103,944.09
  6. Step 6: Final answer
    x = 77,553.13

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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.