Home / 133,509.28-184,288.80-76,943.20

Finding the Fourth Proportional to 133,509.28, 184,288.80 and 76,943.20

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Solution

The fourth proportional to 133,509.28, 184,288.80 and 76,943.20 is: 106,208.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,509.28 : 184,288.80 = 76,943.20 : x
  2. Step 2: Convert to fraction form
    133,509.28/184,288.80 = 76,943.20/x
  3. Step 3: Cross multiply
    133,509.28x = 184,288.80 × 76,943.20
  4. Step 4: Simplify right side
    133,509.28x = 14,179,769,996.16
  5. Step 5: Solve for x
    x = 14,179,769,996.16/133,509.28
  6. Step 6: Final answer
    x = 106,208.12

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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.