Home / 122,740.24-169,379-68,291.20

Finding the Fourth Proportional to 122,740.24, 169,379 and 68,291.20

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Solution

The fourth proportional to 122,740.24, 169,379 and 68,291.20 is: 94,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,740.24 : 169,379 = 68,291.20 : x
  2. Step 2: Convert to fraction form
    122,740.24/169,379 = 68,291.20/x
  3. Step 3: Cross multiply
    122,740.24x = 169,379 × 68,291.20
  4. Step 4: Simplify right side
    122,740.24x = 11,567,095,164.80
  5. Step 5: Solve for x
    x = 11,567,095,164.80/122,740.24
  6. Step 6: Final answer
    x = 94,240.45

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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.