Home / 122,538.53-169,101.87-68,819.69

Finding the Fourth Proportional to 122,538.53, 169,101.87 and 68,819.69

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Solution

The fourth proportional to 122,538.53, 169,101.87 and 68,819.69 is: 94,970.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,538.53 : 169,101.87 = 68,819.69 : x
  2. Step 2: Convert to fraction form
    122,538.53/169,101.87 = 68,819.69/x
  3. Step 3: Cross multiply
    122,538.53x = 169,101.87 × 68,819.69
  4. Step 4: Simplify right side
    122,538.53x = 11,637,538,271.82
  5. Step 5: Solve for x
    x = 11,637,538,271.82/122,538.53
  6. Step 6: Final answer
    x = 94,970.44

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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.