Home / 86,189.98-129,252.96-30,015.67

Finding the Fourth Proportional to 86,189.98, 129,252.96 and 30,015.67

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Solution

The fourth proportional to 86,189.98, 129,252.96 and 30,015.67 is: 45,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,189.98 : 129,252.96 = 30,015.67 : x
  2. Step 2: Convert to fraction form
    86,189.98/129,252.96 = 30,015.67/x
  3. Step 3: Cross multiply
    86,189.98x = 129,252.96 × 30,015.67
  4. Step 4: Simplify right side
    86,189.98x = 3,879,614,193.88
  5. Step 5: Solve for x
    x = 3,879,614,193.88/86,189.98
  6. Step 6: Final answer
    x = 45,012.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.