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Finding the Fourth Proportional to 122,806.35, 169,460.71 and 69,090.21

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Solution

The fourth proportional to 122,806.35, 169,460.71 and 69,090.21 is: 95,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,806.35 : 169,460.71 = 69,090.21 : x
  2. Step 2: Convert to fraction form
    122,806.35/169,460.71 = 69,090.21/x
  3. Step 3: Cross multiply
    122,806.35x = 169,460.71 × 69,090.21
  4. Step 4: Simplify right side
    122,806.35x = 11,708,075,867.92
  5. Step 5: Solve for x
    x = 11,708,075,867.92/122,806.35
  6. Step 6: Final answer
    x = 95,337.71

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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.