Home / 216,542.20-298,822.75-121,057.78

Finding the Fourth Proportional to 216,542.20, 298,822.75 and 121,057.78

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Solution

The fourth proportional to 216,542.20, 298,822.75 and 121,057.78 is: 167,056.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,542.20 : 298,822.75 = 121,057.78 : x
  2. Step 2: Convert to fraction form
    216,542.20/298,822.75 = 121,057.78/x
  3. Step 3: Cross multiply
    216,542.20x = 298,822.75 × 121,057.78
  4. Step 4: Simplify right side
    216,542.20x = 36,174,818,728.50
  5. Step 5: Solve for x
    x = 36,174,818,728.50/216,542.20
  6. Step 6: Final answer
    x = 167,056.67

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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.