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Finding the Fourth Proportional to 159,171.63, 219,688.05 and 91,234.16

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Solution

The fourth proportional to 159,171.63, 219,688.05 and 91,234.16 is: 125,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,171.63 : 219,688.05 = 91,234.16 : x
  2. Step 2: Convert to fraction form
    159,171.63/219,688.05 = 91,234.16/x
  3. Step 3: Cross multiply
    159,171.63x = 219,688.05 × 91,234.16
  4. Step 4: Simplify right side
    159,171.63x = 20,043,054,703.79
  5. Step 5: Solve for x
    x = 20,043,054,703.79/159,171.63
  6. Step 6: Final answer
    x = 125,921.02

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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.