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Finding the Fourth Proportional to 166,665.60, 249,998.40 and 42,006.60

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Solution

The fourth proportional to 166,665.60, 249,998.40 and 42,006.60 is: 63,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,665.60 : 249,998.40 = 42,006.60 : x
  2. Step 2: Convert to fraction form
    166,665.60/249,998.40 = 42,006.60/x
  3. Step 3: Cross multiply
    166,665.60x = 249,998.40 × 42,006.60
  4. Step 4: Simplify right side
    166,665.60x = 10,501,582,789.44
  5. Step 5: Solve for x
    x = 10,501,582,789.44/166,665.60
  6. Step 6: Final answer
    x = 63,009.90

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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.