Home / 113,619.40-170,234.70-72,017.80

Finding the Fourth Proportional to 113,619.40, 170,234.70 and 72,017.80

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Solution

The fourth proportional to 113,619.40, 170,234.70 and 72,017.80 is: 107,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,619.40 : 170,234.70 = 72,017.80 : x
  2. Step 2: Convert to fraction form
    113,619.40/170,234.70 = 72,017.80/x
  3. Step 3: Cross multiply
    113,619.40x = 170,234.70 × 72,017.80
  4. Step 4: Simplify right side
    113,619.40x = 12,259,928,577.66
  5. Step 5: Solve for x
    x = 12,259,928,577.66/113,619.40
  6. Step 6: Final answer
    x = 107,903.48

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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.