Home / 142,014.31-195,991.44-80,779.67

Finding the Fourth Proportional to 142,014.31, 195,991.44 and 80,779.67

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Solution

The fourth proportional to 142,014.31, 195,991.44 and 80,779.67 is: 111,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,014.31 : 195,991.44 = 80,779.67 : x
  2. Step 2: Convert to fraction form
    142,014.31/195,991.44 = 80,779.67/x
  3. Step 3: Cross multiply
    142,014.31x = 195,991.44 × 80,779.67
  4. Step 4: Simplify right side
    142,014.31x = 15,832,124,660.35
  5. Step 5: Solve for x
    x = 15,832,124,660.35/142,014.31
  6. Step 6: Final answer
    x = 111,482.60

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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.