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Finding the Fourth Proportional to 166,871.40, 250,307.10 and 100,386.60

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Solution

The fourth proportional to 166,871.40, 250,307.10 and 100,386.60 is: 150,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,871.40 : 250,307.10 = 100,386.60 : x
  2. Step 2: Convert to fraction form
    166,871.40/250,307.10 = 100,386.60/x
  3. Step 3: Cross multiply
    166,871.40x = 250,307.10 × 100,386.60
  4. Step 4: Simplify right side
    166,871.40x = 25,127,478,724.86
  5. Step 5: Solve for x
    x = 25,127,478,724.86/166,871.40
  6. Step 6: Final answer
    x = 150,579.90

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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.