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Finding the Fourth Proportional to 87,784.80, 131,482.80 and 72,232.80

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Solution

The fourth proportional to 87,784.80, 131,482.80 and 72,232.80 is: 108,189.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,784.80 : 131,482.80 = 72,232.80 : x
  2. Step 2: Convert to fraction form
    87,784.80/131,482.80 = 72,232.80/x
  3. Step 3: Cross multiply
    87,784.80x = 131,482.80 × 72,232.80
  4. Step 4: Simplify right side
    87,784.80x = 9,497,370,795.84
  5. Step 5: Solve for x
    x = 9,497,370,795.84/87,784.80
  6. Step 6: Final answer
    x = 108,189.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.