Home / 133,270.34-183,908.05-72,840.49

Finding the Fourth Proportional to 133,270.34, 183,908.05 and 72,840.49

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Solution

The fourth proportional to 133,270.34, 183,908.05 and 72,840.49 is: 100,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,270.34 : 183,908.05 = 72,840.49 : x
  2. Step 2: Convert to fraction form
    133,270.34/183,908.05 = 72,840.49/x
  3. Step 3: Cross multiply
    133,270.34x = 183,908.05 × 72,840.49
  4. Step 4: Simplify right side
    133,270.34x = 13,395,951,835.07
  5. Step 5: Solve for x
    x = 13,395,951,835.07/133,270.34
  6. Step 6: Final answer
    x = 100,517.13

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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.