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Finding the Fourth Proportional to 156,277.95, 215,664.22 and 84,657.96

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Solution

The fourth proportional to 156,277.95, 215,664.22 and 84,657.96 is: 116,828.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,277.95 : 215,664.22 = 84,657.96 : x
  2. Step 2: Convert to fraction form
    156,277.95/215,664.22 = 84,657.96/x
  3. Step 3: Cross multiply
    156,277.95x = 215,664.22 × 84,657.96
  4. Step 4: Simplify right side
    156,277.95x = 18,257,693,824.75
  5. Step 5: Solve for x
    x = 18,257,693,824.75/156,277.95
  6. Step 6: Final answer
    x = 116,828.34

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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.