Home / 159,449.12-220,040.04-87,829.34

Finding the Fourth Proportional to 159,449.12, 220,040.04 and 87,829.34

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Solution

The fourth proportional to 159,449.12, 220,040.04 and 87,829.34 is: 121,204.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,449.12 : 220,040.04 = 87,829.34 : x
  2. Step 2: Convert to fraction form
    159,449.12/220,040.04 = 87,829.34/x
  3. Step 3: Cross multiply
    159,449.12x = 220,040.04 × 87,829.34
  4. Step 4: Simplify right side
    159,449.12x = 19,325,971,486.77
  5. Step 5: Solve for x
    x = 19,325,971,486.77/159,449.12
  6. Step 6: Final answer
    x = 121,204.63

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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.