Home / 156,164.06-215,502.44-87,254.08

Finding the Fourth Proportional to 156,164.06, 215,502.44 and 87,254.08

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Solution

The fourth proportional to 156,164.06, 215,502.44 and 87,254.08 is: 120,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,164.06 : 215,502.44 = 87,254.08 : x
  2. Step 2: Convert to fraction form
    156,164.06/215,502.44 = 87,254.08/x
  3. Step 3: Cross multiply
    156,164.06x = 215,502.44 × 87,254.08
  4. Step 4: Simplify right side
    156,164.06x = 18,803,467,139.96
  5. Step 5: Solve for x
    x = 18,803,467,139.96/156,164.06
  6. Step 6: Final answer
    x = 120,408.42

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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.