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Finding the Fourth Proportional to 141,318, 211,488.21 and 87,260.49

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Solution

The fourth proportional to 141,318, 211,488.21 and 87,260.49 is: 130,588.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,318 : 211,488.21 = 87,260.49 : x
  2. Step 2: Convert to fraction form
    141,318/211,488.21 = 87,260.49/x
  3. Step 3: Cross multiply
    141,318x = 211,488.21 × 87,260.49
  4. Step 4: Simplify right side
    141,318x = 18,454,564,833.82
  5. Step 5: Solve for x
    x = 18,454,564,833.82/141,318
  6. Step 6: Final answer
    x = 130,588.92

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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.