Home / 140,335.28-193,655.64-76,661.36

Finding the Fourth Proportional to 140,335.28, 193,655.64 and 76,661.36

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Solution

The fourth proportional to 140,335.28, 193,655.64 and 76,661.36 is: 105,788.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,335.28 : 193,655.64 = 76,661.36 : x
  2. Step 2: Convert to fraction form
    140,335.28/193,655.64 = 76,661.36/x
  3. Step 3: Cross multiply
    140,335.28x = 193,655.64 × 76,661.36
  4. Step 4: Simplify right side
    140,335.28x = 14,845,904,734.07
  5. Step 5: Solve for x
    x = 14,845,904,734.07/140,335.28
  6. Step 6: Final answer
    x = 105,788.83

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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.