Home / 128,822.40-193,233.60-115,044.30

Finding the Fourth Proportional to 128,822.40, 193,233.60 and 115,044.30

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Solution

The fourth proportional to 128,822.40, 193,233.60 and 115,044.30 is: 172,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,822.40 : 193,233.60 = 115,044.30 : x
  2. Step 2: Convert to fraction form
    128,822.40/193,233.60 = 115,044.30/x
  3. Step 3: Cross multiply
    128,822.40x = 193,233.60 × 115,044.30
  4. Step 4: Simplify right side
    128,822.40x = 22,230,424,248.48
  5. Step 5: Solve for x
    x = 22,230,424,248.48/128,822.40
  6. Step 6: Final answer
    x = 172,566.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.