Home / 216,638.93-298,965.66-121,143.58

Finding the Fourth Proportional to 216,638.93, 298,965.66 and 121,143.58

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Solution

The fourth proportional to 216,638.93, 298,965.66 and 121,143.58 is: 167,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,638.93 : 298,965.66 = 121,143.58 : x
  2. Step 2: Convert to fraction form
    216,638.93/298,965.66 = 121,143.58/x
  3. Step 3: Cross multiply
    216,638.93x = 298,965.66 × 121,143.58
  4. Step 4: Simplify right side
    216,638.93x = 36,217,770,349.46
  5. Step 5: Solve for x
    x = 36,217,770,349.46/216,638.93
  6. Step 6: Final answer
    x = 167,180.34

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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.