Home / 143,038.88-197,395.44-79,382.96

Finding the Fourth Proportional to 143,038.88, 197,395.44 and 79,382.96

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Solution

The fourth proportional to 143,038.88, 197,395.44 and 79,382.96 is: 109,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.88 : 197,395.44 = 79,382.96 : x
  2. Step 2: Convert to fraction form
    143,038.88/197,395.44 = 79,382.96/x
  3. Step 3: Cross multiply
    143,038.88x = 197,395.44 × 79,382.96
  4. Step 4: Simplify right side
    143,038.88x = 15,669,834,317.70
  5. Step 5: Solve for x
    x = 15,669,834,317.70/143,038.88
  6. Step 6: Final answer
    x = 109,549.48

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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.