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Finding the Fourth Proportional to 166,620.78, 249,819.84 and 91,775.88

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Solution

The fourth proportional to 166,620.78, 249,819.84 and 91,775.88 is: 137,602.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,620.78 : 249,819.84 = 91,775.88 : x
  2. Step 2: Convert to fraction form
    166,620.78/249,819.84 = 91,775.88/x
  3. Step 3: Cross multiply
    166,620.78x = 249,819.84 × 91,775.88
  4. Step 4: Simplify right side
    166,620.78x = 22,927,435,657.46
  5. Step 5: Solve for x
    x = 22,927,435,657.46/166,620.78
  6. Step 6: Final answer
    x = 137,602.50

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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.