Home / 142,191.81-196,226.36-78,529.41

Finding the Fourth Proportional to 142,191.81, 196,226.36 and 78,529.41

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Solution

The fourth proportional to 142,191.81, 196,226.36 and 78,529.41 is: 108,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,191.81 : 196,226.36 = 78,529.41 : x
  2. Step 2: Convert to fraction form
    142,191.81/196,226.36 = 78,529.41/x
  3. Step 3: Cross multiply
    142,191.81x = 196,226.36 × 78,529.41
  4. Step 4: Simplify right side
    142,191.81x = 15,409,539,884.60
  5. Step 5: Solve for x
    x = 15,409,539,884.60/142,191.81
  6. Step 6: Final answer
    x = 108,371.50

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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.