Home / 127,780.40-191,707.60-52,886.72

Finding the Fourth Proportional to 127,780.40, 191,707.60 and 52,886.72

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Solution

The fourth proportional to 127,780.40, 191,707.60 and 52,886.72 is: 79,345.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,780.40 : 191,707.60 = 52,886.72 : x
  2. Step 2: Convert to fraction form
    127,780.40/191,707.60 = 52,886.72/x
  3. Step 3: Cross multiply
    127,780.40x = 191,707.60 × 52,886.72
  4. Step 4: Simplify right side
    127,780.40x = 10,138,786,163.07
  5. Step 5: Solve for x
    x = 10,138,786,163.07/127,780.40
  6. Step 6: Final answer
    x = 79,345.39

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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.