Home / 127,918.98-191,943.27-86,278.50

Finding the Fourth Proportional to 127,918.98, 191,943.27 and 86,278.50

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Solution

The fourth proportional to 127,918.98, 191,943.27 and 86,278.50 is: 129,461.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,918.98 : 191,943.27 = 86,278.50 : x
  2. Step 2: Convert to fraction form
    127,918.98/191,943.27 = 86,278.50/x
  3. Step 3: Cross multiply
    127,918.98x = 191,943.27 × 86,278.50
  4. Step 4: Simplify right side
    127,918.98x = 16,560,577,420.70
  5. Step 5: Solve for x
    x = 16,560,577,420.70/127,918.98
  6. Step 6: Final answer
    x = 129,461.46

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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.