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Finding the Fourth Proportional to 166,389.77, 249,520.87 and 130,920.88

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Solution

The fourth proportional to 166,389.77, 249,520.87 and 130,920.88 is: 196,331.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,389.77 : 249,520.87 = 130,920.88 : x
  2. Step 2: Convert to fraction form
    166,389.77/249,520.87 = 130,920.88/x
  3. Step 3: Cross multiply
    166,389.77x = 249,520.87 × 130,920.88
  4. Step 4: Simplify right side
    166,389.77x = 32,667,491,878.77
  5. Step 5: Solve for x
    x = 32,667,491,878.77/166,389.77
  6. Step 6: Final answer
    x = 196,331.13

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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.