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Finding the Fourth Proportional to 172,665.57, 238,289.46 and 104,689.05

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Solution

The fourth proportional to 172,665.57, 238,289.46 and 104,689.05 is: 144,477.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,665.57 : 238,289.46 = 104,689.05 : x
  2. Step 2: Convert to fraction form
    172,665.57/238,289.46 = 104,689.05/x
  3. Step 3: Cross multiply
    172,665.57x = 238,289.46 × 104,689.05
  4. Step 4: Simplify right side
    172,665.57x = 24,946,297,192.41
  5. Step 5: Solve for x
    x = 24,946,297,192.41/172,665.57
  6. Step 6: Final answer
    x = 144,477.54

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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.