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Finding the Fourth Proportional to 122,767.58, 169,421.01 and 72,466.58

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Solution

The fourth proportional to 122,767.58, 169,421.01 and 72,466.58 is: 100,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,767.58 : 169,421.01 = 72,466.58 : x
  2. Step 2: Convert to fraction form
    122,767.58/169,421.01 = 72,466.58/x
  3. Step 3: Cross multiply
    122,767.58x = 169,421.01 × 72,466.58
  4. Step 4: Simplify right side
    122,767.58x = 12,277,361,174.85
  5. Step 5: Solve for x
    x = 12,277,361,174.85/122,767.58
  6. Step 6: Final answer
    x = 100,004.91

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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.