Home / 156,459.44-215,913.47-84,839.28

Finding the Fourth Proportional to 156,459.44, 215,913.47 and 84,839.28

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Solution

The fourth proportional to 156,459.44, 215,913.47 and 84,839.28 is: 117,077.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,459.44 : 215,913.47 = 84,839.28 : x
  2. Step 2: Convert to fraction form
    156,459.44/215,913.47 = 84,839.28/x
  3. Step 3: Cross multiply
    156,459.44x = 215,913.47 × 84,839.28
  4. Step 4: Simplify right side
    156,459.44x = 18,317,942,912.91
  5. Step 5: Solve for x
    x = 18,317,942,912.91/156,459.44
  6. Step 6: Final answer
    x = 117,077.91

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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.