Home / 157,439.39-217,268.64-85,819.43

Finding the Fourth Proportional to 157,439.39, 217,268.64 and 85,819.43

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Solution

The fourth proportional to 157,439.39, 217,268.64 and 85,819.43 is: 118,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,439.39 : 217,268.64 = 85,819.43 : x
  2. Step 2: Convert to fraction form
    157,439.39/217,268.64 = 85,819.43/x
  3. Step 3: Cross multiply
    157,439.39x = 217,268.64 × 85,819.43
  4. Step 4: Simplify right side
    157,439.39x = 18,645,871,384.85
  5. Step 5: Solve for x
    x = 18,645,871,384.85/157,439.39
  6. Step 6: Final answer
    x = 118,432.06

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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.