Home / 143,220.84-197,628.12-79,548.36

Finding the Fourth Proportional to 143,220.84, 197,628.12 and 79,548.36

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Solution

The fourth proportional to 143,220.84, 197,628.12 and 79,548.36 is: 109,767.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,220.84 : 197,628.12 = 79,548.36 : x
  2. Step 2: Convert to fraction form
    143,220.84/197,628.12 = 79,548.36/x
  3. Step 3: Cross multiply
    143,220.84x = 197,628.12 × 79,548.36
  4. Step 4: Simplify right side
    143,220.84x = 15,720,992,835.88
  5. Step 5: Solve for x
    x = 15,720,992,835.88/143,220.84
  6. Step 6: Final answer
    x = 109,767.49

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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.