Home / 143,018.94-197,366.18-79,357.20

Finding the Fourth Proportional to 143,018.94, 197,366.18 and 79,357.20

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Solution

The fourth proportional to 143,018.94, 197,366.18 and 79,357.20 is: 109,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,018.94 : 197,366.18 = 79,357.20 : x
  2. Step 2: Convert to fraction form
    143,018.94/197,366.18 = 79,357.20/x
  3. Step 3: Cross multiply
    143,018.94x = 197,366.18 × 79,357.20
  4. Step 4: Simplify right side
    143,018.94x = 15,662,427,419.50
  5. Step 5: Solve for x
    x = 15,662,427,419.50/143,018.94
  6. Step 6: Final answer
    x = 109,512.96

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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.