Home / 218,669.21-301,772.70-121,873.11

Finding the Fourth Proportional to 218,669.21, 301,772.70 and 121,873.11

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Solution

The fourth proportional to 218,669.21, 301,772.70 and 121,873.11 is: 168,190.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,669.21 : 301,772.70 = 121,873.11 : x
  2. Step 2: Convert to fraction form
    218,669.21/301,772.70 = 121,873.11/x
  3. Step 3: Cross multiply
    218,669.21x = 301,772.70 × 121,873.11
  4. Step 4: Simplify right side
    218,669.21x = 36,777,977,462.10
  5. Step 5: Solve for x
    x = 36,777,977,462.10/218,669.21
  6. Step 6: Final answer
    x = 168,190.01

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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.