Home / 131,412.27-181,351.20-77,706.54

Finding the Fourth Proportional to 131,412.27, 181,351.20 and 77,706.54

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Solution

The fourth proportional to 131,412.27, 181,351.20 and 77,706.54 is: 107,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,412.27 : 181,351.20 = 77,706.54 : x
  2. Step 2: Convert to fraction form
    131,412.27/181,351.20 = 77,706.54/x
  3. Step 3: Cross multiply
    131,412.27x = 181,351.20 × 77,706.54
  4. Step 4: Simplify right side
    131,412.27x = 14,092,174,568.25
  5. Step 5: Solve for x
    x = 14,092,174,568.25/131,412.27
  6. Step 6: Final answer
    x = 107,236.37

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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.