Home / 151,780,908.80-209,457,610.09-82,166,238.43

Finding the Fourth Proportional to 151,780,908.80, 209,457,610.09 and 82,166,238.43

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Solution

The fourth proportional to 151,780,908.80, 209,457,610.09 and 82,166,238.43 is: 113,389,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,780,908.80 : 209,457,610.09 = 82,166,238.43 : x
  2. Step 2: Convert to fraction form
    151,780,908.80/209,457,610.09 = 82,166,238.43/x
  3. Step 3: Cross multiply
    151,780,908.80x = 209,457,610.09 × 82,166,238.43
  4. Step 4: Simplify right side
    151,780,908.80x = 17,210,343,930,903,854
  5. Step 5: Solve for x
    x = 17,210,343,930,903,854/151,780,908.80
  6. Step 6: Final answer
    x = 113,389,385.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.