Home / 142,811.79-197,072.69-82,378.83

Finding the Fourth Proportional to 142,811.79, 197,072.69 and 82,378.83

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Solution

The fourth proportional to 142,811.79, 197,072.69 and 82,378.83 is: 113,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,811.79 : 197,072.69 = 82,378.83 : x
  2. Step 2: Convert to fraction form
    142,811.79/197,072.69 = 82,378.83/x
  3. Step 3: Cross multiply
    142,811.79x = 197,072.69 × 82,378.83
  4. Step 4: Simplify right side
    142,811.79x = 16,234,617,215.26
  5. Step 5: Solve for x
    x = 16,234,617,215.26/142,811.79
  6. Step 6: Final answer
    x = 113,678.41

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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.