Home / 120,570.21-180,895.82-84,584.16

Finding the Fourth Proportional to 120,570.21, 180,895.82 and 84,584.16

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Solution

The fourth proportional to 120,570.21, 180,895.82 and 84,584.16 is: 126,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,570.21 : 180,895.82 = 84,584.16 : x
  2. Step 2: Convert to fraction form
    120,570.21/180,895.82 = 84,584.16/x
  3. Step 3: Cross multiply
    120,570.21x = 180,895.82 × 84,584.16
  4. Step 4: Simplify right side
    120,570.21x = 15,300,920,559.29
  5. Step 5: Solve for x
    x = 15,300,920,559.29/120,570.21
  6. Step 6: Final answer
    x = 126,904.65

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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.