Home / 131,008.32-180,740.16-80,619.84

Finding the Fourth Proportional to 131,008.32, 180,740.16 and 80,619.84

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Solution

The fourth proportional to 131,008.32, 180,740.16 and 80,619.84 is: 111,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,008.32 : 180,740.16 = 80,619.84 : x
  2. Step 2: Convert to fraction form
    131,008.32/180,740.16 = 80,619.84/x
  3. Step 3: Cross multiply
    131,008.32x = 180,740.16 × 80,619.84
  4. Step 4: Simplify right side
    131,008.32x = 14,571,242,780.77
  5. Step 5: Solve for x
    x = 14,571,242,780.77/131,008.32
  6. Step 6: Final answer
    x = 111,223.80

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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.