Home / 209,315.80-313,973.70-120,742.30

Finding the Fourth Proportional to 209,315.80, 313,973.70 and 120,742.30

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Solution

The fourth proportional to 209,315.80, 313,973.70 and 120,742.30 is: 181,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,315.80 : 313,973.70 = 120,742.30 : x
  2. Step 2: Convert to fraction form
    209,315.80/313,973.70 = 120,742.30/x
  3. Step 3: Cross multiply
    209,315.80x = 313,973.70 × 120,742.30
  4. Step 4: Simplify right side
    209,315.80x = 37,909,906,677.51
  5. Step 5: Solve for x
    x = 37,909,906,677.51/209,315.80
  6. Step 6: Final answer
    x = 181,113.45

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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.