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Finding the Fourth Proportional to 156,177.99, 215,525.34 and 84,558

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Solution

The fourth proportional to 156,177.99, 215,525.34 and 84,558 is: 116,689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,177.99 : 215,525.34 = 84,558 : x
  2. Step 2: Convert to fraction form
    156,177.99/215,525.34 = 84,558/x
  3. Step 3: Cross multiply
    156,177.99x = 215,525.34 × 84,558
  4. Step 4: Simplify right side
    156,177.99x = 18,224,391,699.72
  5. Step 5: Solve for x
    x = 18,224,391,699.72/156,177.99
  6. Step 6: Final answer
    x = 116,689.89

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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.