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Finding the Fourth Proportional to 143,798.40, 215,697.60 and 133,956.90

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Solution

The fourth proportional to 143,798.40, 215,697.60 and 133,956.90 is: 200,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,798.40 : 215,697.60 = 133,956.90 : x
  2. Step 2: Convert to fraction form
    143,798.40/215,697.60 = 133,956.90/x
  3. Step 3: Cross multiply
    143,798.40x = 215,697.60 × 133,956.90
  4. Step 4: Simplify right side
    143,798.40x = 28,894,181,833.44
  5. Step 5: Solve for x
    x = 28,894,181,833.44/143,798.40
  6. Step 6: Final answer
    x = 200,935.35

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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.