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Finding the Fourth Proportional to 122,940.13, 169,655.76 and 69,230.45

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Solution

The fourth proportional to 122,940.13, 169,655.76 and 69,230.45 is: 95,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,940.13 : 169,655.76 = 69,230.45 : x
  2. Step 2: Convert to fraction form
    122,940.13/169,655.76 = 69,230.45/x
  3. Step 3: Cross multiply
    122,940.13x = 169,655.76 × 69,230.45
  4. Step 4: Simplify right side
    122,940.13x = 11,745,344,609.89
  5. Step 5: Solve for x
    x = 11,745,344,609.89/122,940.13
  6. Step 6: Final answer
    x = 95,537.11

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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.