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Finding the Fourth Proportional to 117,175.20, 161,700.40 and 63,459.20

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Solution

The fourth proportional to 117,175.20, 161,700.40 and 63,459.20 is: 87,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,175.20 : 161,700.40 = 63,459.20 : x
  2. Step 2: Convert to fraction form
    117,175.20/161,700.40 = 63,459.20/x
  3. Step 3: Cross multiply
    117,175.20x = 161,700.40 × 63,459.20
  4. Step 4: Simplify right side
    117,175.20x = 10,261,378,023.68
  5. Step 5: Solve for x
    x = 10,261,378,023.68/117,175.20
  6. Step 6: Final answer
    x = 87,572.95

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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.