Home / 156,637.78-216,159.60-85,017.80

Finding the Fourth Proportional to 156,637.78, 216,159.60 and 85,017.80

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Solution

The fourth proportional to 156,637.78, 216,159.60 and 85,017.80 is: 117,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,637.78 : 216,159.60 = 85,017.80 : x
  2. Step 2: Convert to fraction form
    156,637.78/216,159.60 = 85,017.80/x
  3. Step 3: Cross multiply
    156,637.78x = 216,159.60 × 85,017.80
  4. Step 4: Simplify right side
    156,637.78x = 18,377,413,640.88
  5. Step 5: Solve for x
    x = 18,377,413,640.88/156,637.78
  6. Step 6: Final answer
    x = 117,324.27

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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.