Home / 145,169,076.40-217,753,614.60-72,609,665.20

Finding the Fourth Proportional to 145,169,076.40, 217,753,614.60 and 72,609,665.20

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Solution

The fourth proportional to 145,169,076.40, 217,753,614.60 and 72,609,665.20 is: 108,914,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,169,076.40 : 217,753,614.60 = 72,609,665.20 : x
  2. Step 2: Convert to fraction form
    145,169,076.40/217,753,614.60 = 72,609,665.20/x
  3. Step 3: Cross multiply
    145,169,076.40x = 217,753,614.60 × 72,609,665.20
  4. Step 4: Simplify right side
    145,169,076.40x = 15,811,017,052,195,832
  5. Step 5: Solve for x
    x = 15,811,017,052,195,832/145,169,076.40
  6. Step 6: Final answer
    x = 108,914,497.80

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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.