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Finding the Fourth Proportional to 181,390.16, 250,388.18 and 120,938.70

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Solution

The fourth proportional to 181,390.16, 250,388.18 and 120,938.70 is: 166,941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,390.16 : 250,388.18 = 120,938.70 : x
  2. Step 2: Convert to fraction form
    181,390.16/250,388.18 = 120,938.70/x
  3. Step 3: Cross multiply
    181,390.16x = 250,388.18 × 120,938.70
  4. Step 4: Simplify right side
    181,390.16x = 30,281,620,379.87
  5. Step 5: Solve for x
    x = 30,281,620,379.87/181,390.16
  6. Step 6: Final answer
    x = 166,941.92

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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.