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Finding the Fourth Proportional to 122,805.86, 169,469.55 and 69,090.30

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Solution

The fourth proportional to 122,805.86, 169,469.55 and 69,090.30 is: 95,343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,805.86 : 169,469.55 = 69,090.30 : x
  2. Step 2: Convert to fraction form
    122,805.86/169,469.55 = 69,090.30/x
  3. Step 3: Cross multiply
    122,805.86x = 169,469.55 × 69,090.30
  4. Step 4: Simplify right side
    122,805.86x = 11,708,702,050.37
  5. Step 5: Solve for x
    x = 11,708,702,050.37/122,805.86
  6. Step 6: Final answer
    x = 95,343.19

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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.