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Finding the Fourth Proportional to 159,120.64, 219,591.88 and 87,503.68

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Solution

The fourth proportional to 159,120.64, 219,591.88 and 87,503.68 is: 120,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,120.64 : 219,591.88 = 87,503.68 : x
  2. Step 2: Convert to fraction form
    159,120.64/219,591.88 = 87,503.68/x
  3. Step 3: Cross multiply
    159,120.64x = 219,591.88 × 87,503.68
  4. Step 4: Simplify right side
    159,120.64x = 19,215,097,598.12
  5. Step 5: Solve for x
    x = 19,215,097,598.12/159,120.64
  6. Step 6: Final answer
    x = 120,758.05

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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.