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Finding the Fourth Proportional to 122,004.84, 168,342.75 and 76,656.56

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Solution

The fourth proportional to 122,004.84, 168,342.75 and 76,656.56 is: 105,771.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,004.84 : 168,342.75 = 76,656.56 : x
  2. Step 2: Convert to fraction form
    122,004.84/168,342.75 = 76,656.56/x
  3. Step 3: Cross multiply
    122,004.84x = 168,342.75 × 76,656.56
  4. Step 4: Simplify right side
    122,004.84x = 12,904,575,274.23
  5. Step 5: Solve for x
    x = 12,904,575,274.23/122,004.84
  6. Step 6: Final answer
    x = 105,771.01

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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.