Home / 156,396.56-215,825.76-87,485.27

Finding the Fourth Proportional to 156,396.56, 215,825.76 and 87,485.27

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Solution

The fourth proportional to 156,396.56, 215,825.76 and 87,485.27 is: 120,728.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,396.56 : 215,825.76 = 87,485.27 : x
  2. Step 2: Convert to fraction form
    156,396.56/215,825.76 = 87,485.27/x
  3. Step 3: Cross multiply
    156,396.56x = 215,825.76 × 87,485.27
  4. Step 4: Simplify right side
    156,396.56x = 18,881,573,807.43
  5. Step 5: Solve for x
    x = 18,881,573,807.43/156,396.56
  6. Step 6: Final answer
    x = 120,728.83

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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.