Home / 131,529.78-181,520.32-74,174.22

Finding the Fourth Proportional to 131,529.78, 181,520.32 and 74,174.22

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Solution

The fourth proportional to 131,529.78, 181,520.32 and 74,174.22 is: 102,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,529.78 : 181,520.32 = 74,174.22 : x
  2. Step 2: Convert to fraction form
    131,529.78/181,520.32 = 74,174.22/x
  3. Step 3: Cross multiply
    131,529.78x = 181,520.32 × 74,174.22
  4. Step 4: Simplify right side
    131,529.78x = 13,464,128,150.15
  5. Step 5: Solve for x
    x = 13,464,128,150.15/131,529.78
  6. Step 6: Final answer
    x = 102,365.63

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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.