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Finding the Fourth Proportional to 133,291.70, 183,942.48 and 72,862.58

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Solution

The fourth proportional to 133,291.70, 183,942.48 and 72,862.58 is: 100,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,291.70 : 183,942.48 = 72,862.58 : x
  2. Step 2: Convert to fraction form
    133,291.70/183,942.48 = 72,862.58/x
  3. Step 3: Cross multiply
    133,291.70x = 183,942.48 × 72,862.58
  4. Step 4: Simplify right side
    133,291.70x = 13,402,522,744.69
  5. Step 5: Solve for x
    x = 13,402,522,744.69/133,291.70
  6. Step 6: Final answer
    x = 100,550.32

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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.