Home / 122,463.85-169,007.68-81,557.84

Finding the Fourth Proportional to 122,463.85, 169,007.68 and 81,557.84

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Solution

The fourth proportional to 122,463.85, 169,007.68 and 81,557.84 is: 112,554.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,463.85 : 169,007.68 = 81,557.84 : x
  2. Step 2: Convert to fraction form
    122,463.85/169,007.68 = 81,557.84/x
  3. Step 3: Cross multiply
    122,463.85x = 169,007.68 × 81,557.84
  4. Step 4: Simplify right side
    122,463.85x = 13,783,901,324.21
  5. Step 5: Solve for x
    x = 13,783,901,324.21/122,463.85
  6. Step 6: Final answer
    x = 112,554.86

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1.5x scale

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.