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Finding the Fourth Proportional to 143,353.59, 197,833.02 and 78,827.73

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Solution

The fourth proportional to 143,353.59, 197,833.02 and 78,827.73 is: 108,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,353.59 : 197,833.02 = 78,827.73 : x
  2. Step 2: Convert to fraction form
    143,353.59/197,833.02 = 78,827.73/x
  3. Step 3: Cross multiply
    143,353.59x = 197,833.02 × 78,827.73
  4. Step 4: Simplify right side
    143,353.59x = 15,594,727,885.64
  5. Step 5: Solve for x
    x = 15,594,727,885.64/143,353.59
  6. Step 6: Final answer
    x = 108,785.05

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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.