Home / 156,741.08-216,304.14-85,121.72

Finding the Fourth Proportional to 156,741.08, 216,304.14 and 85,121.72

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Solution

The fourth proportional to 156,741.08, 216,304.14 and 85,121.72 is: 117,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,741.08 : 216,304.14 = 85,121.72 : x
  2. Step 2: Convert to fraction form
    156,741.08/216,304.14 = 85,121.72/x
  3. Step 3: Cross multiply
    156,741.08x = 216,304.14 × 85,121.72
  4. Step 4: Simplify right side
    156,741.08x = 18,412,180,439.92
  5. Step 5: Solve for x
    x = 18,412,180,439.92/156,741.08
  6. Step 6: Final answer
    x = 117,468.76

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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.