Home / 131,238.86-181,108.05-74,650.10

Finding the Fourth Proportional to 131,238.86, 181,108.05 and 74,650.10

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Solution

The fourth proportional to 131,238.86, 181,108.05 and 74,650.10 is: 103,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,238.86 : 181,108.05 = 74,650.10 : x
  2. Step 2: Convert to fraction form
    131,238.86/181,108.05 = 74,650.10/x
  3. Step 3: Cross multiply
    131,238.86x = 181,108.05 × 74,650.10
  4. Step 4: Simplify right side
    131,238.86x = 13,519,734,043.31
  5. Step 5: Solve for x
    x = 13,519,734,043.31/131,238.86
  6. Step 6: Final answer
    x = 103,016.24

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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.