Home / 133,308.59-183,940.47-78,869.30

Finding the Fourth Proportional to 133,308.59, 183,940.47 and 78,869.30

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Solution

The fourth proportional to 133,308.59, 183,940.47 and 78,869.30 is: 108,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,308.59 : 183,940.47 = 78,869.30 : x
  2. Step 2: Convert to fraction form
    133,308.59/183,940.47 = 78,869.30/x
  3. Step 3: Cross multiply
    133,308.59x = 183,940.47 × 78,869.30
  4. Step 4: Simplify right side
    133,308.59x = 14,507,255,190.87
  5. Step 5: Solve for x
    x = 14,507,255,190.87/133,308.59
  6. Step 6: Final answer
    x = 108,824.61

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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.