Home / 156,463.44-215,919-84,843.28

Finding the Fourth Proportional to 156,463.44, 215,919 and 84,843.28

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Solution

The fourth proportional to 156,463.44, 215,919 and 84,843.28 is: 117,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,463.44 : 215,919 = 84,843.28 : x
  2. Step 2: Convert to fraction form
    156,463.44/215,919 = 84,843.28/x
  3. Step 3: Cross multiply
    156,463.44x = 215,919 × 84,843.28
  4. Step 4: Simplify right side
    156,463.44x = 18,319,276,174.32
  5. Step 5: Solve for x
    x = 18,319,276,174.32/156,463.44
  6. Step 6: Final answer
    x = 117,083.43

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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.