Home / 103,965.37-143,472.21-56,218.71

Finding the Fourth Proportional to 103,965.37, 143,472.21 and 56,218.71

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Solution

The fourth proportional to 103,965.37, 143,472.21 and 56,218.71 is: 77,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,965.37 : 143,472.21 = 56,218.71 : x
  2. Step 2: Convert to fraction form
    103,965.37/143,472.21 = 56,218.71/x
  3. Step 3: Cross multiply
    103,965.37x = 143,472.21 × 56,218.71
  4. Step 4: Simplify right side
    103,965.37x = 8,065,823,311.36
  5. Step 5: Solve for x
    x = 8,065,823,311.36/103,965.37
  6. Step 6: Final answer
    x = 77,581.83

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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.