Home / 156,228.21-215,579.52-87,304.95

Finding the Fourth Proportional to 156,228.21, 215,579.52 and 87,304.95

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Solution

The fourth proportional to 156,228.21, 215,579.52 and 87,304.95 is: 120,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,228.21 : 215,579.52 = 87,304.95 : x
  2. Step 2: Convert to fraction form
    156,228.21/215,579.52 = 87,304.95/x
  3. Step 3: Cross multiply
    156,228.21x = 215,579.52 × 87,304.95
  4. Step 4: Simplify right side
    156,228.21x = 18,821,159,214.62
  5. Step 5: Solve for x
    x = 18,821,159,214.62/156,228.21
  6. Step 6: Final answer
    x = 120,472.22

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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.