Home / 131,424.12-181,379.45-80,471.07

Finding the Fourth Proportional to 131,424.12, 181,379.45 and 80,471.07

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Solution

The fourth proportional to 131,424.12, 181,379.45 and 80,471.07 is: 111,058.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,424.12 : 181,379.45 = 80,471.07 : x
  2. Step 2: Convert to fraction form
    131,424.12/181,379.45 = 80,471.07/x
  3. Step 3: Cross multiply
    131,424.12x = 181,379.45 × 80,471.07
  4. Step 4: Simplify right side
    131,424.12x = 14,595,798,618.69
  5. Step 5: Solve for x
    x = 14,595,798,618.69/131,424.12
  6. Step 6: Final answer
    x = 111,058.75

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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.