Home / 128,862.23-193,215.68-57,772.01

Finding the Fourth Proportional to 128,862.23, 193,215.68 and 57,772.01

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Solution

The fourth proportional to 128,862.23, 193,215.68 and 57,772.01 is: 86,623.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,862.23 : 193,215.68 = 57,772.01 : x
  2. Step 2: Convert to fraction form
    128,862.23/193,215.68 = 57,772.01/x
  3. Step 3: Cross multiply
    128,862.23x = 193,215.68 × 57,772.01
  4. Step 4: Simplify right side
    128,862.23x = 11,162,456,942.18
  5. Step 5: Solve for x
    x = 11,162,456,942.18/128,862.23
  6. Step 6: Final answer
    x = 86,623.19

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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.