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Finding the Fourth Proportional to 172,400.57, 237,857.40 and 104,395.80

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Solution

The fourth proportional to 172,400.57, 237,857.40 and 104,395.80 is: 144,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,400.57 : 237,857.40 = 104,395.80 : x
  2. Step 2: Convert to fraction form
    172,400.57/237,857.40 = 104,395.80/x
  3. Step 3: Cross multiply
    172,400.57x = 237,857.40 × 104,395.80
  4. Step 4: Simplify right side
    172,400.57x = 24,831,313,558.92
  5. Step 5: Solve for x
    x = 24,831,313,558.92/172,400.57
  6. Step 6: Final answer
    x = 144,032.67

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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.