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Finding the Fourth Proportional to 156,507.58, 215,976.54 and 87,596.02

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Solution

The fourth proportional to 156,507.58, 215,976.54 and 87,596.02 is: 120,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,507.58 : 215,976.54 = 87,596.02 : x
  2. Step 2: Convert to fraction form
    156,507.58/215,976.54 = 87,596.02/x
  3. Step 3: Cross multiply
    156,507.58x = 215,976.54 × 87,596.02
  4. Step 4: Simplify right side
    156,507.58x = 18,918,685,317.37
  5. Step 5: Solve for x
    x = 18,918,685,317.37/156,507.58
  6. Step 6: Final answer
    x = 120,880.31

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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.