Home / 143,206.41-197,628.33-78,679.83

Finding the Fourth Proportional to 143,206.41, 197,628.33 and 78,679.83

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Solution

The fourth proportional to 143,206.41, 197,628.33 and 78,679.83 is: 108,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,206.41 : 197,628.33 = 78,679.83 : x
  2. Step 2: Convert to fraction form
    143,206.41/197,628.33 = 78,679.83/x
  3. Step 3: Cross multiply
    143,206.41x = 197,628.33 × 78,679.83
  4. Step 4: Simplify right side
    143,206.41x = 15,549,363,915.57
  5. Step 5: Solve for x
    x = 15,549,363,915.57/143,206.41
  6. Step 6: Final answer
    x = 108,580.08

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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.