Home / 156,623.55-216,140.64-85,003.59

Finding the Fourth Proportional to 156,623.55, 216,140.64 and 85,003.59

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Solution

The fourth proportional to 156,623.55, 216,140.64 and 85,003.59 is: 117,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,623.55 : 216,140.64 = 85,003.59 : x
  2. Step 2: Convert to fraction form
    156,623.55/216,140.64 = 85,003.59/x
  3. Step 3: Cross multiply
    156,623.55x = 216,140.64 × 85,003.59
  4. Step 4: Simplify right side
    156,623.55x = 18,372,730,344.90
  5. Step 5: Solve for x
    x = 18,372,730,344.90/156,623.55
  6. Step 6: Final answer
    x = 117,305.03

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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.