Home / 113,137.66-156,118.26-65,406.34

Finding the Fourth Proportional to 113,137.66, 156,118.26 and 65,406.34

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Solution

The fourth proportional to 113,137.66, 156,118.26 and 65,406.34 is: 90,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,137.66 : 156,118.26 = 65,406.34 : x
  2. Step 2: Convert to fraction form
    113,137.66/156,118.26 = 65,406.34/x
  3. Step 3: Cross multiply
    113,137.66x = 156,118.26 × 65,406.34
  4. Step 4: Simplify right side
    113,137.66x = 10,211,123,993.77
  5. Step 5: Solve for x
    x = 10,211,123,993.77/113,137.66
  6. Step 6: Final answer
    x = 90,253.98

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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.