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Finding the Fourth Proportional to 119,587.56, 163,835.76 and 115,103.40

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Solution

The fourth proportional to 119,587.56, 163,835.76 and 115,103.40 is: 157,692.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,587.56 : 163,835.76 = 115,103.40 : x
  2. Step 2: Convert to fraction form
    119,587.56/163,835.76 = 115,103.40/x
  3. Step 3: Cross multiply
    119,587.56x = 163,835.76 × 115,103.40
  4. Step 4: Simplify right side
    119,587.56x = 18,858,053,017.58
  5. Step 5: Solve for x
    x = 18,858,053,017.58/119,587.56
  6. Step 6: Final answer
    x = 157,692.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.