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Finding the Fourth Proportional to 123,147.60, 184,444.60 and 74,985.76

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Solution

The fourth proportional to 123,147.60, 184,444.60 and 74,985.76 is: 112,310.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,147.60 : 184,444.60 = 74,985.76 : x
  2. Step 2: Convert to fraction form
    123,147.60/184,444.60 = 74,985.76/x
  3. Step 3: Cross multiply
    123,147.60x = 184,444.60 × 74,985.76
  4. Step 4: Simplify right side
    123,147.60x = 13,830,718,508.90
  5. Step 5: Solve for x
    x = 13,830,718,508.90/123,147.60
  6. Step 6: Final answer
    x = 112,310.09

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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.