Home / 151,761.16-209,421.42-83,776.45

Finding the Fourth Proportional to 151,761.16, 209,421.42 and 83,776.45

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Solution

The fourth proportional to 151,761.16, 209,421.42 and 83,776.45 is: 115,606.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,761.16 : 209,421.42 = 83,776.45 : x
  2. Step 2: Convert to fraction form
    151,761.16/209,421.42 = 83,776.45/x
  3. Step 3: Cross multiply
    151,761.16x = 209,421.42 × 83,776.45
  4. Step 4: Simplify right side
    151,761.16x = 17,544,583,121.56
  5. Step 5: Solve for x
    x = 17,544,583,121.56/151,761.16
  6. Step 6: Final answer
    x = 115,606.54

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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.