Home / 166,463,999.70-249,695,999.55-85,842,431.70

Finding the Fourth Proportional to 166,463,999.70, 249,695,999.55 and 85,842,431.70

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Solution

The fourth proportional to 166,463,999.70, 249,695,999.55 and 85,842,431.70 is: 128,763,647.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,463,999.70 : 249,695,999.55 = 85,842,431.70 : x
  2. Step 2: Convert to fraction form
    166,463,999.70/249,695,999.55 = 85,842,431.70/x
  3. Step 3: Cross multiply
    166,463,999.70x = 249,695,999.55 × 85,842,431.70
  4. Step 4: Simplify right side
    166,463,999.70x = 21,434,511,787,134,108
  5. Step 5: Solve for x
    x = 21,434,511,787,134,108/166,463,999.70
  6. Step 6: Final answer
    x = 128,763,647.55

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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.