Home / 143,005.79-197,348.75-79,343.58

Finding the Fourth Proportional to 143,005.79, 197,348.75 and 79,343.58

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Solution

The fourth proportional to 143,005.79, 197,348.75 and 79,343.58 is: 109,494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,005.79 : 197,348.75 = 79,343.58 : x
  2. Step 2: Convert to fraction form
    143,005.79/197,348.75 = 79,343.58/x
  3. Step 3: Cross multiply
    143,005.79x = 197,348.75 × 79,343.58
  4. Step 4: Simplify right side
    143,005.79x = 15,658,355,936.81
  5. Step 5: Solve for x
    x = 15,658,355,936.81/143,005.79
  6. Step 6: Final answer
    x = 109,494.56

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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.