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Finding the Fourth Proportional to 122,256.77, 168,714.77 and 76,964.72

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Solution

The fourth proportional to 122,256.77, 168,714.77 and 76,964.72 is: 106,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,256.77 : 168,714.77 = 76,964.72 : x
  2. Step 2: Convert to fraction form
    122,256.77/168,714.77 = 76,964.72/x
  3. Step 3: Cross multiply
    122,256.77x = 168,714.77 × 76,964.72
  4. Step 4: Simplify right side
    122,256.77x = 12,985,083,804.52
  5. Step 5: Solve for x
    x = 12,985,083,804.52/122,256.77
  6. Step 6: Final answer
    x = 106,211.58

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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.