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Finding the Fourth Proportional to 117,203.88, 161,742.14 and 63,488.90

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Solution

The fourth proportional to 117,203.88, 161,742.14 and 63,488.90 is: 87,615.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,203.88 : 161,742.14 = 63,488.90 : x
  2. Step 2: Convert to fraction form
    117,203.88/161,742.14 = 63,488.90/x
  3. Step 3: Cross multiply
    117,203.88x = 161,742.14 × 63,488.90
  4. Step 4: Simplify right side
    117,203.88x = 10,268,830,877.24
  5. Step 5: Solve for x
    x = 10,268,830,877.24/117,203.88
  6. Step 6: Final answer
    x = 87,615.11

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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.