Home / 216,600.81-298,908.15-121,107.51

Finding the Fourth Proportional to 216,600.81, 298,908.15 and 121,107.51

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Solution

The fourth proportional to 216,600.81, 298,908.15 and 121,107.51 is: 167,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,600.81 : 298,908.15 = 121,107.51 : x
  2. Step 2: Convert to fraction form
    216,600.81/298,908.15 = 121,107.51/x
  3. Step 3: Cross multiply
    216,600.81x = 298,908.15 × 121,107.51
  4. Step 4: Simplify right side
    216,600.81x = 36,200,019,665.13
  5. Step 5: Solve for x
    x = 36,200,019,665.13/216,600.81
  6. Step 6: Final answer
    x = 167,127.81

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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.