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Finding the Fourth Proportional to 156,797.42, 216,446.67 and 105,879.11

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Solution

The fourth proportional to 156,797.42, 216,446.67 and 105,879.11 is: 146,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,797.42 : 216,446.67 = 105,879.11 : x
  2. Step 2: Convert to fraction form
    156,797.42/216,446.67 = 105,879.11/x
  3. Step 3: Cross multiply
    156,797.42x = 216,446.67 × 105,879.11
  4. Step 4: Simplify right side
    156,797.42x = 22,917,179,699.83
  5. Step 5: Solve for x
    x = 22,917,179,699.83/156,797.42
  6. Step 6: Final answer
    x = 146,157.89

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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.