Home / 128,867.04-193,338-57,773.88

Finding the Fourth Proportional to 128,867.04, 193,338 and 57,773.88

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Solution

The fourth proportional to 128,867.04, 193,338 and 57,773.88 is: 86,677.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,867.04 : 193,338 = 57,773.88 : x
  2. Step 2: Convert to fraction form
    128,867.04/193,338 = 57,773.88/x
  3. Step 3: Cross multiply
    128,867.04x = 193,338 × 57,773.88
  4. Step 4: Simplify right side
    128,867.04x = 11,169,886,411.44
  5. Step 5: Solve for x
    x = 11,169,886,411.44/128,867.04
  6. Step 6: Final answer
    x = 86,677.61

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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.