Home / 156,638.03-216,160.65-85,018.05

Finding the Fourth Proportional to 156,638.03, 216,160.65 and 85,018.05

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Solution

The fourth proportional to 156,638.03, 216,160.65 and 85,018.05 is: 117,325.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.03 : 216,160.65 = 85,018.05 : x
  2. Step 2: Convert to fraction form
    156,638.03/216,160.65 = 85,018.05/x
  3. Step 3: Cross multiply
    156,638.03x = 216,160.65 × 85,018.05
  4. Step 4: Simplify right side
    156,638.03x = 18,377,556,949.73
  5. Step 5: Solve for x
    x = 18,377,556,949.73/156,638.03
  6. Step 6: Final answer
    x = 117,325.00

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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.