Home / 122,719.10-169,361.24-74,981.57

Finding the Fourth Proportional to 122,719.10, 169,361.24 and 74,981.57

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Solution

The fourth proportional to 122,719.10, 169,361.24 and 74,981.57 is: 103,479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,719.10 : 169,361.24 = 74,981.57 : x
  2. Step 2: Convert to fraction form
    122,719.10/169,361.24 = 74,981.57/x
  3. Step 3: Cross multiply
    122,719.10x = 169,361.24 × 74,981.57
  4. Step 4: Simplify right side
    122,719.10x = 12,698,970,450.63
  5. Step 5: Solve for x
    x = 12,698,970,450.63/122,719.10
  6. Step 6: Final answer
    x = 103,479.99

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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.