Home / 133,214.41-183,838.53-72,788.78

Finding the Fourth Proportional to 133,214.41, 183,838.53 and 72,788.78

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Solution

The fourth proportional to 133,214.41, 183,838.53 and 72,788.78 is: 100,449.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,214.41 : 183,838.53 = 72,788.78 : x
  2. Step 2: Convert to fraction form
    133,214.41/183,838.53 = 72,788.78/x
  3. Step 3: Cross multiply
    133,214.41x = 183,838.53 × 72,788.78
  4. Step 4: Simplify right side
    133,214.41x = 13,381,381,951.75
  5. Step 5: Solve for x
    x = 13,381,381,951.75/133,214.41
  6. Step 6: Final answer
    x = 100,449.96

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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.