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Finding the Fourth Proportional to 117,255.40, 161,813.12 and 63,540.48

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Solution

The fourth proportional to 117,255.40, 161,813.12 and 63,540.48 is: 87,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,255.40 : 161,813.12 = 63,540.48 : x
  2. Step 2: Convert to fraction form
    117,255.40/161,813.12 = 63,540.48/x
  3. Step 3: Cross multiply
    117,255.40x = 161,813.12 × 63,540.48
  4. Step 4: Simplify right side
    117,255.40x = 10,281,683,315.10
  5. Step 5: Solve for x
    x = 10,281,683,315.10/117,255.40
  6. Step 6: Final answer
    x = 87,686.22

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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.