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Finding the Fourth Proportional to 117,645.64, 162,347.70 and 63,928.87

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Solution

The fourth proportional to 117,645.64, 162,347.70 and 63,928.87 is: 88,220.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,645.64 : 162,347.70 = 63,928.87 : x
  2. Step 2: Convert to fraction form
    117,645.64/162,347.70 = 63,928.87/x
  3. Step 3: Cross multiply
    117,645.64x = 162,347.70 × 63,928.87
  4. Step 4: Simplify right side
    117,645.64x = 10,378,705,008.10
  5. Step 5: Solve for x
    x = 10,378,705,008.10/117,645.64
  6. Step 6: Final answer
    x = 88,220.06

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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.