Home / 117,122.16-161,627.46-63,405.78

Finding the Fourth Proportional to 117,122.16, 161,627.46 and 63,405.78

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Solution

The fourth proportional to 117,122.16, 161,627.46 and 63,405.78 is: 87,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,122.16 : 161,627.46 = 63,405.78 : x
  2. Step 2: Convert to fraction form
    117,122.16/161,627.46 = 63,405.78/x
  3. Step 3: Cross multiply
    117,122.16x = 161,627.46 × 63,405.78
  4. Step 4: Simplify right side
    117,122.16x = 10,248,115,170.72
  5. Step 5: Solve for x
    x = 10,248,115,170.72/117,122.16
  6. Step 6: Final answer
    x = 87,499.37

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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.