Home / 185,612.67-256,145.36-100,729.53

Finding the Fourth Proportional to 185,612.67, 256,145.36 and 100,729.53

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Solution

The fourth proportional to 185,612.67, 256,145.36 and 100,729.53 is: 139,006.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,612.67 : 256,145.36 = 100,729.53 : x
  2. Step 2: Convert to fraction form
    185,612.67/256,145.36 = 100,729.53/x
  3. Step 3: Cross multiply
    185,612.67x = 256,145.36 × 100,729.53
  4. Step 4: Simplify right side
    185,612.67x = 25,801,401,220.83
  5. Step 5: Solve for x
    x = 25,801,401,220.83/185,612.67
  6. Step 6: Final answer
    x = 139,006.68

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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.