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Finding the Fourth Proportional to 133,092.39, 183,688.59 and 84,643.81

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Solution

The fourth proportional to 133,092.39, 183,688.59 and 84,643.81 is: 116,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,092.39 : 183,688.59 = 84,643.81 : x
  2. Step 2: Convert to fraction form
    133,092.39/183,688.59 = 84,643.81/x
  3. Step 3: Cross multiply
    133,092.39x = 183,688.59 × 84,643.81
  4. Step 4: Simplify right side
    133,092.39x = 15,548,101,969.32
  5. Step 5: Solve for x
    x = 15,548,101,969.32/133,092.39
  6. Step 6: Final answer
    x = 116,821.87

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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.