Home / 216,417.12-298,636.20-120,910.56

Finding the Fourth Proportional to 216,417.12, 298,636.20 and 120,910.56

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Solution

The fourth proportional to 216,417.12, 298,636.20 and 120,910.56 is: 166,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,417.12 : 298,636.20 = 120,910.56 : x
  2. Step 2: Convert to fraction form
    216,417.12/298,636.20 = 120,910.56/x
  3. Step 3: Cross multiply
    216,417.12x = 298,636.20 × 120,910.56
  4. Step 4: Simplify right side
    216,417.12x = 36,108,270,178.27
  5. Step 5: Solve for x
    x = 36,108,270,178.27/216,417.12
  6. Step 6: Final answer
    x = 166,845.72

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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.