Home / 156,339.72-215,748.27-84,721.50

Finding the Fourth Proportional to 156,339.72, 215,748.27 and 84,721.50

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Solution

The fourth proportional to 156,339.72, 215,748.27 and 84,721.50 is: 116,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,339.72 : 215,748.27 = 84,721.50 : x
  2. Step 2: Convert to fraction form
    156,339.72/215,748.27 = 84,721.50/x
  3. Step 3: Cross multiply
    156,339.72x = 215,748.27 × 84,721.50
  4. Step 4: Simplify right side
    156,339.72x = 18,278,517,056.81
  5. Step 5: Solve for x
    x = 18,278,517,056.81/156,339.72
  6. Step 6: Final answer
    x = 116,915.38

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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.