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Finding the Fourth Proportional to 122,707.81, 169,334.73 and 68,259.32

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Solution

The fourth proportional to 122,707.81, 169,334.73 and 68,259.32 is: 94,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,707.81 : 169,334.73 = 68,259.32 : x
  2. Step 2: Convert to fraction form
    122,707.81/169,334.73 = 68,259.32/x
  3. Step 3: Cross multiply
    122,707.81x = 169,334.73 × 68,259.32
  4. Step 4: Simplify right side
    122,707.81x = 11,558,674,404.35
  5. Step 5: Solve for x
    x = 11,558,674,404.35/122,707.81
  6. Step 6: Final answer
    x = 94,196.73

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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.