Home / 143,048.68-197,403.40-79,384.84

Finding the Fourth Proportional to 143,048.68, 197,403.40 and 79,384.84

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Solution

The fourth proportional to 143,048.68, 197,403.40 and 79,384.84 is: 109,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,048.68 : 197,403.40 = 79,384.84 : x
  2. Step 2: Convert to fraction form
    143,048.68/197,403.40 = 79,384.84/x
  3. Step 3: Cross multiply
    143,048.68x = 197,403.40 × 79,384.84
  4. Step 4: Simplify right side
    143,048.68x = 15,670,837,324.46
  5. Step 5: Solve for x
    x = 15,670,837,324.46/143,048.68
  6. Step 6: Final answer
    x = 109,548.98

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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.