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Finding the Fourth Proportional to 133,292.70, 183,943.86 and 72,863.58

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Solution

The fourth proportional to 133,292.70, 183,943.86 and 72,863.58 is: 100,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,292.70 : 183,943.86 = 72,863.58 : x
  2. Step 2: Convert to fraction form
    133,292.70/183,943.86 = 72,863.58/x
  3. Step 3: Cross multiply
    133,292.70x = 183,943.86 × 72,863.58
  4. Step 4: Simplify right side
    133,292.70x = 13,402,808,158.62
  5. Step 5: Solve for x
    x = 13,402,808,158.62/133,292.70
  6. Step 6: Final answer
    x = 100,551.70

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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.