Home / 133,036.63-199,448.98-76,812.96

Finding the Fourth Proportional to 133,036.63, 199,448.98 and 76,812.96

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Solution

The fourth proportional to 133,036.63, 199,448.98 and 76,812.96 is: 115,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,036.63 : 199,448.98 = 76,812.96 : x
  2. Step 2: Convert to fraction form
    133,036.63/199,448.98 = 76,812.96/x
  3. Step 3: Cross multiply
    133,036.63x = 199,448.98 × 76,812.96
  4. Step 4: Simplify right side
    133,036.63x = 15,320,266,388.85
  5. Step 5: Solve for x
    x = 15,320,266,388.85/133,036.63
  6. Step 6: Final answer
    x = 115,158.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.