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Finding the Fourth Proportional to 117,392.55, 162,001.80 and 63,677.40

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Solution

The fourth proportional to 117,392.55, 162,001.80 and 63,677.40 is: 87,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,392.55 : 162,001.80 = 63,677.40 : x
  2. Step 2: Convert to fraction form
    117,392.55/162,001.80 = 63,677.40/x
  3. Step 3: Cross multiply
    117,392.55x = 162,001.80 × 63,677.40
  4. Step 4: Simplify right side
    117,392.55x = 10,315,853,419.32
  5. Step 5: Solve for x
    x = 10,315,853,419.32/117,392.55
  6. Step 6: Final answer
    x = 87,874.86

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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.