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Finding the Fourth Proportional to 123,114.45, 169,899.08 and 69,394.71

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Solution

The fourth proportional to 123,114.45, 169,899.08 and 69,394.71 is: 95,765.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,114.45 : 169,899.08 = 69,394.71 : x
  2. Step 2: Convert to fraction form
    123,114.45/169,899.08 = 69,394.71/x
  3. Step 3: Cross multiply
    123,114.45x = 169,899.08 × 69,394.71
  4. Step 4: Simplify right side
    123,114.45x = 11,790,097,038.89
  5. Step 5: Solve for x
    x = 11,790,097,038.89/123,114.45
  6. Step 6: Final answer
    x = 95,765.34

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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.