Home / 156,416.14-215,853.72-87,505.76

Finding the Fourth Proportional to 156,416.14, 215,853.72 and 87,505.76

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Solution

The fourth proportional to 156,416.14, 215,853.72 and 87,505.76 is: 120,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,416.14 : 215,853.72 = 87,505.76 : x
  2. Step 2: Convert to fraction form
    156,416.14/215,853.72 = 87,505.76/x
  3. Step 3: Cross multiply
    156,416.14x = 215,853.72 × 87,505.76
  4. Step 4: Simplify right side
    156,416.14x = 18,888,443,817.43
  5. Step 5: Solve for x
    x = 18,888,443,817.43/156,416.14
  6. Step 6: Final answer
    x = 120,757.64

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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.