Home / 156,939.06-216,573.34-85,320.88

Finding the Fourth Proportional to 156,939.06, 216,573.34 and 85,320.88

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Solution

The fourth proportional to 156,939.06, 216,573.34 and 85,320.88 is: 117,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.06 : 216,573.34 = 85,320.88 : x
  2. Step 2: Convert to fraction form
    156,939.06/216,573.34 = 85,320.88/x
  3. Step 3: Cross multiply
    156,939.06x = 216,573.34 × 85,320.88
  4. Step 4: Simplify right side
    156,939.06x = 18,478,227,953.34
  5. Step 5: Solve for x
    x = 18,478,227,953.34/156,939.06
  6. Step 6: Final answer
    x = 117,741.42

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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.