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Finding the Fourth Proportional to 123,137.16, 169,930.80 and 69,411.48

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Solution

The fourth proportional to 123,137.16, 169,930.80 and 69,411.48 is: 95,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,137.16 : 169,930.80 = 69,411.48 : x
  2. Step 2: Convert to fraction form
    123,137.16/169,930.80 = 69,411.48/x
  3. Step 3: Cross multiply
    123,137.16x = 169,930.80 × 69,411.48
  4. Step 4: Simplify right side
    123,137.16x = 11,795,148,325.58
  5. Step 5: Solve for x
    x = 11,795,148,325.58/123,137.16
  6. Step 6: Final answer
    x = 95,788.70

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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.