Home / 209,050.03-288,608.70-137,637.64

Finding the Fourth Proportional to 209,050.03, 288,608.70 and 137,637.64

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Solution

The fourth proportional to 209,050.03, 288,608.70 and 137,637.64 is: 190,018.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,050.03 : 288,608.70 = 137,637.64 : x
  2. Step 2: Convert to fraction form
    209,050.03/288,608.70 = 137,637.64/x
  3. Step 3: Cross multiply
    209,050.03x = 288,608.70 × 137,637.64
  4. Step 4: Simplify right side
    209,050.03x = 39,723,420,351.47
  5. Step 5: Solve for x
    x = 39,723,420,351.47/209,050.03
  6. Step 6: Final answer
    x = 190,018.73

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1.5x scale

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.