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Finding the Fourth Proportional to 156,157.01, 215,496.75 and 84,537.03

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Solution

The fourth proportional to 156,157.01, 215,496.75 and 84,537.03 is: 116,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,157.01 : 215,496.75 = 84,537.03 : x
  2. Step 2: Convert to fraction form
    156,157.01/215,496.75 = 84,537.03/x
  3. Step 3: Cross multiply
    156,157.01x = 215,496.75 × 84,537.03
  4. Step 4: Simplify right side
    156,157.01x = 18,217,455,219.65
  5. Step 5: Solve for x
    x = 18,217,455,219.65/156,157.01
  6. Step 6: Final answer
    x = 116,661.14

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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.