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Finding the Fourth Proportional to 156,222.80, 215,584.80 and 84,602.24

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Solution

The fourth proportional to 156,222.80, 215,584.80 and 84,602.24 is: 116,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,222.80 : 215,584.80 = 84,602.24 : x
  2. Step 2: Convert to fraction form
    156,222.80/215,584.80 = 84,602.24/x
  3. Step 3: Cross multiply
    156,222.80x = 215,584.80 × 84,602.24
  4. Step 4: Simplify right side
    156,222.80x = 18,238,956,989.95
  5. Step 5: Solve for x
    x = 18,238,956,989.95/156,222.80
  6. Step 6: Final answer
    x = 116,749.65

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1.5x scale

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.