Home / 131,427.75-181,370.31-71,811.75

Finding the Fourth Proportional to 131,427.75, 181,370.31 and 71,811.75

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Solution

The fourth proportional to 131,427.75, 181,370.31 and 71,811.75 is: 99,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.75 : 181,370.31 = 71,811.75 : x
  2. Step 2: Convert to fraction form
    131,427.75/181,370.31 = 71,811.75/x
  3. Step 3: Cross multiply
    131,427.75x = 181,370.31 × 71,811.75
  4. Step 4: Simplify right side
    131,427.75x = 13,024,519,359.14
  5. Step 5: Solve for x
    x = 13,024,519,359.14/131,427.75
  6. Step 6: Final answer
    x = 99,100.22

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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.