Home / 122,564.64-169,137.90-68,116.50

Finding the Fourth Proportional to 122,564.64, 169,137.90 and 68,116.50

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Solution

The fourth proportional to 122,564.64, 169,137.90 and 68,116.50 is: 94,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,564.64 : 169,137.90 = 68,116.50 : x
  2. Step 2: Convert to fraction form
    122,564.64/169,137.90 = 68,116.50/x
  3. Step 3: Cross multiply
    122,564.64x = 169,137.90 × 68,116.50
  4. Step 4: Simplify right side
    122,564.64x = 11,521,081,765.35
  5. Step 5: Solve for x
    x = 11,521,081,765.35/122,564.64
  6. Step 6: Final answer
    x = 94,000.05

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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.