Home / 156,991.60-217,218.92-136,890.40

Finding the Fourth Proportional to 156,991.60, 217,218.92 and 136,890.40

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Solution

The fourth proportional to 156,991.60, 217,218.92 and 136,890.40 is: 189,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,991.60 : 217,218.92 = 136,890.40 : x
  2. Step 2: Convert to fraction form
    156,991.60/217,218.92 = 136,890.40/x
  3. Step 3: Cross multiply
    156,991.60x = 217,218.92 × 136,890.40
  4. Step 4: Simplify right side
    156,991.60x = 29,735,184,846.37
  5. Step 5: Solve for x
    x = 29,735,184,846.37/156,991.60
  6. Step 6: Final answer
    x = 189,406.22

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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.