Home / 159,982.57-220,774.63-87,385.51

Finding the Fourth Proportional to 159,982.57, 220,774.63 and 87,385.51

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Solution

The fourth proportional to 159,982.57, 220,774.63 and 87,385.51 is: 120,591.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,982.57 : 220,774.63 = 87,385.51 : x
  2. Step 2: Convert to fraction form
    159,982.57/220,774.63 = 87,385.51/x
  3. Step 3: Cross multiply
    159,982.57x = 220,774.63 × 87,385.51
  4. Step 4: Simplify right side
    159,982.57x = 19,292,503,637.61
  5. Step 5: Solve for x
    x = 19,292,503,637.61/159,982.57
  6. Step 6: Final answer
    x = 120,591.28

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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.