Home / 133,041.51-199,456.28-76,817.85

Finding the Fourth Proportional to 133,041.51, 199,456.28 and 76,817.85

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Solution

The fourth proportional to 133,041.51, 199,456.28 and 76,817.85 is: 115,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,041.51 : 199,456.28 = 76,817.85 : x
  2. Step 2: Convert to fraction form
    133,041.51/199,456.28 = 76,817.85/x
  3. Step 3: Cross multiply
    133,041.51x = 199,456.28 × 76,817.85
  4. Step 4: Simplify right side
    133,041.51x = 15,321,802,214.51
  5. Step 5: Solve for x
    x = 15,321,802,214.51/133,041.51
  6. Step 6: Final answer
    x = 115,165.58

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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.