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Finding the Fourth Proportional to 122,767.08, 169,420.32 and 72,466.08

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Solution

The fourth proportional to 122,767.08, 169,420.32 and 72,466.08 is: 100,004.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,767.08 : 169,420.32 = 72,466.08 : x
  2. Step 2: Convert to fraction form
    122,767.08/169,420.32 = 72,466.08/x
  3. Step 3: Cross multiply
    122,767.08x = 169,420.32 × 72,466.08
  4. Step 4: Simplify right side
    122,767.08x = 12,277,226,462.75
  5. Step 5: Solve for x
    x = 12,277,226,462.75/122,767.08
  6. Step 6: Final answer
    x = 100,004.22

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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.