Home / 128,118.96-192,213.67-61,614.72

Finding the Fourth Proportional to 128,118.96, 192,213.67 and 61,614.72

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Solution

The fourth proportional to 128,118.96, 192,213.67 and 61,614.72 is: 92,439.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118.96 : 192,213.67 = 61,614.72 : x
  2. Step 2: Convert to fraction form
    128,118.96/192,213.67 = 61,614.72/x
  3. Step 3: Cross multiply
    128,118.96x = 192,213.67 × 61,614.72
  4. Step 4: Simplify right side
    128,118.96x = 11,843,191,457.22
  5. Step 5: Solve for x
    x = 11,843,191,457.22/128,118.96
  6. Step 6: Final answer
    x = 92,439.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.