Home / 156,750.72-216,318.24-85,130.88

Finding the Fourth Proportional to 156,750.72, 216,318.24 and 85,130.88

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Solution

The fourth proportional to 156,750.72, 216,318.24 and 85,130.88 is: 117,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,750.72 : 216,318.24 = 85,130.88 : x
  2. Step 2: Convert to fraction form
    156,750.72/216,318.24 = 85,130.88/x
  3. Step 3: Cross multiply
    156,750.72x = 216,318.24 × 85,130.88
  4. Step 4: Simplify right side
    156,750.72x = 18,415,362,131.25
  5. Step 5: Solve for x
    x = 18,415,362,131.25/156,750.72
  6. Step 6: Final answer
    x = 117,481.83

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1.5x scale

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.