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Finding the Fourth Proportional to 156,097.76, 215,414.89 and 84,477.79

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Solution

The fourth proportional to 156,097.76, 215,414.89 and 84,477.79 is: 116,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,097.76 : 215,414.89 = 84,477.79 : x
  2. Step 2: Convert to fraction form
    156,097.76/215,414.89 = 84,477.79/x
  3. Step 3: Cross multiply
    156,097.76x = 215,414.89 × 84,477.79
  4. Step 4: Simplify right side
    156,097.76x = 18,197,773,898.37
  5. Step 5: Solve for x
    x = 18,197,773,898.37/156,097.76
  6. Step 6: Final answer
    x = 116,579.34

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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.