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Finding the Fourth Proportional to 184,563.80, 276,189.60 and 128,139.20

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Solution

The fourth proportional to 184,563.80, 276,189.60 and 128,139.20 is: 191,753.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,563.80 : 276,189.60 = 128,139.20 : x
  2. Step 2: Convert to fraction form
    184,563.80/276,189.60 = 128,139.20/x
  3. Step 3: Cross multiply
    184,563.80x = 276,189.60 × 128,139.20
  4. Step 4: Simplify right side
    184,563.80x = 35,390,714,392.32
  5. Step 5: Solve for x
    x = 35,390,714,392.32/184,563.80
  6. Step 6: Final answer
    x = 191,753.28

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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.