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Finding the Fourth Proportional to 166,388.70, 249,615.45 and 71,618.70

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Solution

The fourth proportional to 166,388.70, 249,615.45 and 71,618.70 is: 107,442.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,388.70 : 249,615.45 = 71,618.70 : x
  2. Step 2: Convert to fraction form
    166,388.70/249,615.45 = 71,618.70/x
  3. Step 3: Cross multiply
    166,388.70x = 249,615.45 × 71,618.70
  4. Step 4: Simplify right side
    166,388.70x = 17,877,134,028.92
  5. Step 5: Solve for x
    x = 17,877,134,028.92/166,388.70
  6. Step 6: Final answer
    x = 107,442.00

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1.5x scale

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.