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Finding the Fourth Proportional to 181,123.40, 271,685.10 and 143,798.60

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Solution

The fourth proportional to 181,123.40, 271,685.10 and 143,798.60 is: 215,697.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,123.40 : 271,685.10 = 143,798.60 : x
  2. Step 2: Convert to fraction form
    181,123.40/271,685.10 = 143,798.60/x
  3. Step 3: Cross multiply
    181,123.40x = 271,685.10 × 143,798.60
  4. Step 4: Simplify right side
    181,123.40x = 39,067,937,020.86
  5. Step 5: Solve for x
    x = 39,067,937,020.86/181,123.40
  6. Step 6: Final answer
    x = 215,697.90

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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.