Home / 131,085.72-180,917.76-80,127.84

Finding the Fourth Proportional to 131,085.72, 180,917.76 and 80,127.84

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Solution

The fourth proportional to 131,085.72, 180,917.76 and 80,127.84 is: 110,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,085.72 : 180,917.76 = 80,127.84 : x
  2. Step 2: Convert to fraction form
    131,085.72/180,917.76 = 80,127.84/x
  3. Step 3: Cross multiply
    131,085.72x = 180,917.76 × 80,127.84
  4. Step 4: Simplify right side
    131,085.72x = 14,496,549,326.44
  5. Step 5: Solve for x
    x = 14,496,549,326.44/131,085.72
  6. Step 6: Final answer
    x = 110,588.32

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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.