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Finding the Fourth Proportional to 133,313.72, 183,973.03 and 72,883.40

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Solution

The fourth proportional to 133,313.72, 183,973.03 and 72,883.40 is: 100,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,313.72 : 183,973.03 = 72,883.40 : x
  2. Step 2: Convert to fraction form
    133,313.72/183,973.03 = 72,883.40/x
  3. Step 3: Cross multiply
    133,313.72x = 183,973.03 × 72,883.40
  4. Step 4: Simplify right side
    133,313.72x = 13,408,578,832.63
  5. Step 5: Solve for x
    x = 13,408,578,832.63/133,313.72
  6. Step 6: Final answer
    x = 100,579.14

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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.