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Finding the Fourth Proportional to 133,292.31, 183,942.96 and 72,862.96

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Solution

The fourth proportional to 133,292.31, 183,942.96 and 72,862.96 is: 100,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,292.31 : 183,942.96 = 72,862.96 : x
  2. Step 2: Convert to fraction form
    133,292.31/183,942.96 = 72,862.96/x
  3. Step 3: Cross multiply
    133,292.31x = 183,942.96 × 72,862.96
  4. Step 4: Simplify right side
    133,292.31x = 13,402,628,536.76
  5. Step 5: Solve for x
    x = 13,402,628,536.76/133,292.31
  6. Step 6: Final answer
    x = 100,550.65

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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.