Home / 168,905.21-232,987.64-111,545.06

Finding the Fourth Proportional to 168,905.21, 232,987.64 and 111,545.06

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Solution

The fourth proportional to 168,905.21, 232,987.64 and 111,545.06 is: 153,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,905.21 : 232,987.64 = 111,545.06 : x
  2. Step 2: Convert to fraction form
    168,905.21/232,987.64 = 111,545.06/x
  3. Step 3: Cross multiply
    168,905.21x = 232,987.64 × 111,545.06
  4. Step 4: Simplify right side
    168,905.21x = 25,988,618,560.39
  5. Step 5: Solve for x
    x = 25,988,618,560.39/168,905.21
  6. Step 6: Final answer
    x = 153,865.11

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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.