Home / 122,743.84-169,329.36-77,401.12

Finding the Fourth Proportional to 122,743.84, 169,329.36 and 77,401.12

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Solution

The fourth proportional to 122,743.84, 169,329.36 and 77,401.12 is: 106,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,743.84 : 169,329.36 = 77,401.12 : x
  2. Step 2: Convert to fraction form
    122,743.84/169,329.36 = 77,401.12/x
  3. Step 3: Cross multiply
    122,743.84x = 169,329.36 × 77,401.12
  4. Step 4: Simplify right side
    122,743.84x = 13,106,282,112.88
  5. Step 5: Solve for x
    x = 13,106,282,112.88/122,743.84
  6. Step 6: Final answer
    x = 106,777.51

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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.