Home / 156,419.08-215,801.76-102,733.20

Finding the Fourth Proportional to 156,419.08, 215,801.76 and 102,733.20

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Solution

The fourth proportional to 156,419.08, 215,801.76 and 102,733.20 is: 141,734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,419.08 : 215,801.76 = 102,733.20 : x
  2. Step 2: Convert to fraction form
    156,419.08/215,801.76 = 102,733.20/x
  3. Step 3: Cross multiply
    156,419.08x = 215,801.76 × 102,733.20
  4. Step 4: Simplify right side
    156,419.08x = 22,170,005,370.43
  5. Step 5: Solve for x
    x = 22,170,005,370.43/156,419.08
  6. Step 6: Final answer
    x = 141,734.66

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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.