Home / 129,953.40-179,333.44-72,589.08

Finding the Fourth Proportional to 129,953.40, 179,333.44 and 72,589.08

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Solution

The fourth proportional to 129,953.40, 179,333.44 and 72,589.08 is: 100,171.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,953.40 : 179,333.44 = 72,589.08 : x
  2. Step 2: Convert to fraction form
    129,953.40/179,333.44 = 72,589.08/x
  3. Step 3: Cross multiply
    129,953.40x = 179,333.44 × 72,589.08
  4. Step 4: Simplify right side
    129,953.40x = 13,017,649,422.84
  5. Step 5: Solve for x
    x = 13,017,649,422.84/129,953.40
  6. Step 6: Final answer
    x = 100,171.67

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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.