Home / 156,638.93-216,160.99-85,018.32

Finding the Fourth Proportional to 156,638.93, 216,160.99 and 85,018.32

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Solution

The fourth proportional to 156,638.93, 216,160.99 and 85,018.32 is: 117,324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.93 : 216,160.99 = 85,018.32 : x
  2. Step 2: Convert to fraction form
    156,638.93/216,160.99 = 85,018.32/x
  3. Step 3: Cross multiply
    156,638.93x = 216,160.99 × 85,018.32
  4. Step 4: Simplify right side
    156,638.93x = 18,377,644,006.79
  5. Step 5: Solve for x
    x = 18,377,644,006.79/156,638.93
  6. Step 6: Final answer
    x = 117,324.89

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1.5x scale

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.