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Finding the Fourth Proportional to 156,087, 215,400.06 and 84,467.02

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Solution

The fourth proportional to 156,087, 215,400.06 and 84,467.02 is: 116,564.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,087 : 215,400.06 = 84,467.02 : x
  2. Step 2: Convert to fraction form
    156,087/215,400.06 = 84,467.02/x
  3. Step 3: Cross multiply
    156,087x = 215,400.06 × 84,467.02
  4. Step 4: Simplify right side
    156,087x = 18,194,201,176.02
  5. Step 5: Solve for x
    x = 18,194,201,176.02/156,087
  6. Step 6: Final answer
    x = 116,564.49

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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.