Home / 156,794.10-235,018.35-86,723.70

Finding the Fourth Proportional to 156,794.10, 235,018.35 and 86,723.70

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Solution

The fourth proportional to 156,794.10, 235,018.35 and 86,723.70 is: 129,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,794.10 : 235,018.35 = 86,723.70 : x
  2. Step 2: Convert to fraction form
    156,794.10/235,018.35 = 86,723.70/x
  3. Step 3: Cross multiply
    156,794.10x = 235,018.35 × 86,723.70
  4. Step 4: Simplify right side
    156,794.10x = 20,381,660,879.90
  5. Step 5: Solve for x
    x = 20,381,660,879.90/156,794.10
  6. Step 6: Final answer
    x = 129,989.97

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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.