Home / 209,720.88-314,331.57-120,790.17

Finding the Fourth Proportional to 209,720.88, 314,331.57 and 120,790.17

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Solution

The fourth proportional to 209,720.88, 314,331.57 and 120,790.17 is: 181,041.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,720.88 : 314,331.57 = 120,790.17 : x
  2. Step 2: Convert to fraction form
    209,720.88/314,331.57 = 120,790.17/x
  3. Step 3: Cross multiply
    209,720.88x = 314,331.57 × 120,790.17
  4. Step 4: Simplify right side
    209,720.88x = 37,968,163,776.67
  5. Step 5: Solve for x
    x = 37,968,163,776.67/209,720.88
  6. Step 6: Final answer
    x = 181,041.41

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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.