Home / 157,721.44-217,656.20-86,103.04

Finding the Fourth Proportional to 157,721.44, 217,656.20 and 86,103.04

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Solution

The fourth proportional to 157,721.44, 217,656.20 and 86,103.04 is: 118,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,721.44 : 217,656.20 = 86,103.04 : x
  2. Step 2: Convert to fraction form
    157,721.44/217,656.20 = 86,103.04/x
  3. Step 3: Cross multiply
    157,721.44x = 217,656.20 × 86,103.04
  4. Step 4: Simplify right side
    157,721.44x = 18,740,860,494.85
  5. Step 5: Solve for x
    x = 18,740,860,494.85/157,721.44
  6. Step 6: Final answer
    x = 118,822.53

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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.