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Finding the Fourth Proportional to 123,398.60, 185,292.30 and 70,910.60

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Solution

The fourth proportional to 123,398.60, 185,292.30 and 70,910.60 is: 106,477.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,398.60 : 185,292.30 = 70,910.60 : x
  2. Step 2: Convert to fraction form
    123,398.60/185,292.30 = 70,910.60/x
  3. Step 3: Cross multiply
    123,398.60x = 185,292.30 × 70,910.60
  4. Step 4: Simplify right side
    123,398.60x = 13,139,188,168.38
  5. Step 5: Solve for x
    x = 13,139,188,168.38/123,398.60
  6. Step 6: Final answer
    x = 106,477.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.