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Finding the Fourth Proportional to 141,000.68, 194,580.42 and 87,275

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Solution

The fourth proportional to 141,000.68, 194,580.42 and 87,275 is: 120,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,000.68 : 194,580.42 = 87,275 : x
  2. Step 2: Convert to fraction form
    141,000.68/194,580.42 = 87,275/x
  3. Step 3: Cross multiply
    141,000.68x = 194,580.42 × 87,275
  4. Step 4: Simplify right side
    141,000.68x = 16,982,006,155.50
  5. Step 5: Solve for x
    x = 16,982,006,155.50/141,000.68
  6. Step 6: Final answer
    x = 120,439.18

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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.