Home / 133,178.40-183,786.48-72,749.52

Finding the Fourth Proportional to 133,178.40, 183,786.48 and 72,749.52

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Solution

The fourth proportional to 133,178.40, 183,786.48 and 72,749.52 is: 100,394.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,178.40 : 183,786.48 = 72,749.52 : x
  2. Step 2: Convert to fraction form
    133,178.40/183,786.48 = 72,749.52/x
  3. Step 3: Cross multiply
    133,178.40x = 183,786.48 × 72,749.52
  4. Step 4: Simplify right side
    133,178.40x = 13,370,378,202.49
  5. Step 5: Solve for x
    x = 13,370,378,202.49/133,178.40
  6. Step 6: Final answer
    x = 100,394.49

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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.