Home / 156,928.55-216,558.85-85,310.38

Finding the Fourth Proportional to 156,928.55, 216,558.85 and 85,310.38

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Solution

The fourth proportional to 156,928.55, 216,558.85 and 85,310.38 is: 117,726.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,928.55 : 216,558.85 = 85,310.38 : x
  2. Step 2: Convert to fraction form
    156,928.55/216,558.85 = 85,310.38/x
  3. Step 3: Cross multiply
    156,928.55x = 216,558.85 × 85,310.38
  4. Step 4: Simplify right side
    156,928.55x = 18,474,716,276.52
  5. Step 5: Solve for x
    x = 18,474,716,276.52/156,928.55
  6. Step 6: Final answer
    x = 117,726.93

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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.