Home / 117,130.56-161,640.24-63,415.60

Finding the Fourth Proportional to 117,130.56, 161,640.24 and 63,415.60

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Solution

The fourth proportional to 117,130.56, 161,640.24 and 63,415.60 is: 87,513.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,130.56 : 161,640.24 = 63,415.60 : x
  2. Step 2: Convert to fraction form
    117,130.56/161,640.24 = 63,415.60/x
  3. Step 3: Cross multiply
    117,130.56x = 161,640.24 × 63,415.60
  4. Step 4: Simplify right side
    117,130.56x = 10,250,512,803.74
  5. Step 5: Solve for x
    x = 10,250,512,803.74/117,130.56
  6. Step 6: Final answer
    x = 87,513.56

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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.