Home / 156,319.21-215,722.98-87,416.40

Finding the Fourth Proportional to 156,319.21, 215,722.98 and 87,416.40

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Solution

The fourth proportional to 156,319.21, 215,722.98 and 87,416.40 is: 120,636.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,319.21 : 215,722.98 = 87,416.40 : x
  2. Step 2: Convert to fraction form
    156,319.21/215,722.98 = 87,416.40/x
  3. Step 3: Cross multiply
    156,319.21x = 215,722.98 × 87,416.40
  4. Step 4: Simplify right side
    156,319.21x = 18,857,726,308.87
  5. Step 5: Solve for x
    x = 18,857,726,308.87/156,319.21
  6. Step 6: Final answer
    x = 120,636.02

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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.