Home / 113,913.82-157,189.44-66,177.28

Finding the Fourth Proportional to 113,913.82, 157,189.44 and 66,177.28

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Solution

The fourth proportional to 113,913.82, 157,189.44 and 66,177.28 is: 91,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,913.82 : 157,189.44 = 66,177.28 : x
  2. Step 2: Convert to fraction form
    113,913.82/157,189.44 = 66,177.28/x
  3. Step 3: Cross multiply
    113,913.82x = 157,189.44 × 66,177.28
  4. Step 4: Simplify right side
    113,913.82x = 10,402,369,583.92
  5. Step 5: Solve for x
    x = 10,402,369,583.92/113,913.82
  6. Step 6: Final answer
    x = 91,317.89

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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.