Home / 103,971.60-143,480.16-56,224.80

Finding the Fourth Proportional to 103,971.60, 143,480.16 and 56,224.80

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Solution

The fourth proportional to 103,971.60, 143,480.16 and 56,224.80 is: 77,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,971.60 : 143,480.16 = 56,224.80 : x
  2. Step 2: Convert to fraction form
    103,971.60/143,480.16 = 56,224.80/x
  3. Step 3: Cross multiply
    103,971.60x = 143,480.16 × 56,224.80
  4. Step 4: Simplify right side
    103,971.60x = 8,067,143,299.97
  5. Step 5: Solve for x
    x = 8,067,143,299.97/103,971.60
  6. Step 6: Final answer
    x = 77,589.87

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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.