Home / 156,938.06-216,571.96-85,319.88

Finding the Fourth Proportional to 156,938.06, 216,571.96 and 85,319.88

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Solution

The fourth proportional to 156,938.06, 216,571.96 and 85,319.88 is: 117,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.06 : 216,571.96 = 85,319.88 : x
  2. Step 2: Convert to fraction form
    156,938.06/216,571.96 = 85,319.88/x
  3. Step 3: Cross multiply
    156,938.06x = 216,571.96 × 85,319.88
  4. Step 4: Simplify right side
    156,938.06x = 18,477,893,638.56
  5. Step 5: Solve for x
    x = 18,477,893,638.56/156,938.06
  6. Step 6: Final answer
    x = 117,740.04

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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.