Home / 105,695.28-158,416.56-80,539.92

Finding the Fourth Proportional to 105,695.28, 158,416.56 and 80,539.92

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Solution

The fourth proportional to 105,695.28, 158,416.56 and 80,539.92 is: 120,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.28 : 158,416.56 = 80,539.92 : x
  2. Step 2: Convert to fraction form
    105,695.28/158,416.56 = 80,539.92/x
  3. Step 3: Cross multiply
    105,695.28x = 158,416.56 × 80,539.92
  4. Step 4: Simplify right side
    105,695.28x = 12,758,857,069.08
  5. Step 5: Solve for x
    x = 12,758,857,069.08/105,695.28
  6. Step 6: Final answer
    x = 120,713.59

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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.