Home / 103,945.08-143,443.78-56,198.40

Finding the Fourth Proportional to 103,945.08, 143,443.78 and 56,198.40

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Solution

The fourth proportional to 103,945.08, 143,443.78 and 56,198.40 is: 77,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,945.08 : 143,443.78 = 56,198.40 : x
  2. Step 2: Convert to fraction form
    103,945.08/143,443.78 = 56,198.40/x
  3. Step 3: Cross multiply
    103,945.08x = 143,443.78 × 56,198.40
  4. Step 4: Simplify right side
    103,945.08x = 8,061,310,925.95
  5. Step 5: Solve for x
    x = 8,061,310,925.95/103,945.08
  6. Step 6: Final answer
    x = 77,553.56

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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.