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Finding the Fourth Proportional to 181,640.42, 250,719.46 and 117,109.74

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Solution

The fourth proportional to 181,640.42, 250,719.46 and 117,109.74 is: 161,647.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,640.42 : 250,719.46 = 117,109.74 : x
  2. Step 2: Convert to fraction form
    181,640.42/250,719.46 = 117,109.74/x
  3. Step 3: Cross multiply
    181,640.42x = 250,719.46 × 117,109.74
  4. Step 4: Simplify right side
    181,640.42x = 29,361,690,480.77
  5. Step 5: Solve for x
    x = 29,361,690,480.77/181,640.42
  6. Step 6: Final answer
    x = 161,647.34

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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.