Home / 131,811.36-181,899.72-72,195.36

Finding the Fourth Proportional to 131,811.36, 181,899.72 and 72,195.36

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Solution

The fourth proportional to 131,811.36, 181,899.72 and 72,195.36 is: 99,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,811.36 : 181,899.72 = 72,195.36 : x
  2. Step 2: Convert to fraction form
    131,811.36/181,899.72 = 72,195.36/x
  3. Step 3: Cross multiply
    131,811.36x = 181,899.72 × 72,195.36
  4. Step 4: Simplify right side
    131,811.36x = 13,132,315,769.30
  5. Step 5: Solve for x
    x = 13,132,315,769.30/131,811.36
  6. Step 6: Final answer
    x = 99,629.62

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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.