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Finding the Fourth Proportional to 172,802.87, 259,128.21 and 87,361.13

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Solution

The fourth proportional to 172,802.87, 259,128.21 and 87,361.13 is: 131,003.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,802.87 : 259,128.21 = 87,361.13 : x
  2. Step 2: Convert to fraction form
    172,802.87/259,128.21 = 87,361.13/x
  3. Step 3: Cross multiply
    172,802.87x = 259,128.21 × 87,361.13
  4. Step 4: Simplify right side
    172,802.87x = 22,637,734,215.90
  5. Step 5: Solve for x
    x = 22,637,734,215.90/172,802.87
  6. Step 6: Final answer
    x = 131,003.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.