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Finding the Fourth Proportional to 122,636.56, 169,242.44 and 68,931.92

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Solution

The fourth proportional to 122,636.56, 169,242.44 and 68,931.92 is: 95,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,636.56 : 169,242.44 = 68,931.92 : x
  2. Step 2: Convert to fraction form
    122,636.56/169,242.44 = 68,931.92/x
  3. Step 3: Cross multiply
    122,636.56x = 169,242.44 × 68,931.92
  4. Step 4: Simplify right side
    122,636.56x = 11,666,206,334.68
  5. Step 5: Solve for x
    x = 11,666,206,334.68/122,636.56
  6. Step 6: Final answer
    x = 95,128.29

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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.