Home / 145,738.80-218,608.20-139,906.80

Finding the Fourth Proportional to 145,738.80, 218,608.20 and 139,906.80

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Solution

The fourth proportional to 145,738.80, 218,608.20 and 139,906.80 is: 209,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,738.80 : 218,608.20 = 139,906.80 : x
  2. Step 2: Convert to fraction form
    145,738.80/218,608.20 = 139,906.80/x
  3. Step 3: Cross multiply
    145,738.80x = 218,608.20 × 139,906.80
  4. Step 4: Simplify right side
    145,738.80x = 30,584,773,715.76
  5. Step 5: Solve for x
    x = 30,584,773,715.76/145,738.80
  6. Step 6: Final answer
    x = 209,860.20

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1.5x scale

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.