Home / 131,108.27-181,614.60-128,451.06

Finding the Fourth Proportional to 131,108.27, 181,614.60 and 128,451.06

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Solution

The fourth proportional to 131,108.27, 181,614.60 and 128,451.06 is: 177,933.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,108.27 : 181,614.60 = 128,451.06 : x
  2. Step 2: Convert to fraction form
    131,108.27/181,614.60 = 128,451.06/x
  3. Step 3: Cross multiply
    131,108.27x = 181,614.60 × 128,451.06
  4. Step 4: Simplify right side
    131,108.27x = 23,328,587,881.48
  5. Step 5: Solve for x
    x = 23,328,587,881.48/131,108.27
  6. Step 6: Final answer
    x = 177,933.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.