Home / 131,918.56-182,045.36-72,301.28

Finding the Fourth Proportional to 131,918.56, 182,045.36 and 72,301.28

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Solution

The fourth proportional to 131,918.56, 182,045.36 and 72,301.28 is: 99,774.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,918.56 : 182,045.36 = 72,301.28 : x
  2. Step 2: Convert to fraction form
    131,918.56/182,045.36 = 72,301.28/x
  3. Step 3: Cross multiply
    131,918.56x = 182,045.36 × 72,301.28
  4. Step 4: Simplify right side
    131,918.56x = 13,162,112,546.06
  5. Step 5: Solve for x
    x = 13,162,112,546.06/131,918.56
  6. Step 6: Final answer
    x = 99,774.53

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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.