Home / 119,090.14-178,403.01-66,340.78

Finding the Fourth Proportional to 119,090.14, 178,403.01 and 66,340.78

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Solution

The fourth proportional to 119,090.14, 178,403.01 and 66,340.78 is: 99,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,090.14 : 178,403.01 = 66,340.78 : x
  2. Step 2: Convert to fraction form
    119,090.14/178,403.01 = 66,340.78/x
  3. Step 3: Cross multiply
    119,090.14x = 178,403.01 × 66,340.78
  4. Step 4: Simplify right side
    119,090.14x = 11,835,394,837.75
  5. Step 5: Solve for x
    x = 11,835,394,837.75/119,090.14
  6. Step 6: Final answer
    x = 99,381.82

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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.