Home / 156,738.08-216,298.50-85,118.11

Finding the Fourth Proportional to 156,738.08, 216,298.50 and 85,118.11

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Solution

The fourth proportional to 156,738.08, 216,298.50 and 85,118.11 is: 117,462.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,738.08 : 216,298.50 = 85,118.11 : x
  2. Step 2: Convert to fraction form
    156,738.08/216,298.50 = 85,118.11/x
  3. Step 3: Cross multiply
    156,738.08x = 216,298.50 × 85,118.11
  4. Step 4: Simplify right side
    156,738.08x = 18,410,919,515.84
  5. Step 5: Solve for x
    x = 18,410,919,515.84/156,738.08
  6. Step 6: Final answer
    x = 117,462.96

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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.