Home / 159,051.12-219,490.79-87,431.59

Finding the Fourth Proportional to 159,051.12, 219,490.79 and 87,431.59

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Solution

The fourth proportional to 159,051.12, 219,490.79 and 87,431.59 is: 120,655.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,051.12 : 219,490.79 = 87,431.59 : x
  2. Step 2: Convert to fraction form
    159,051.12/219,490.79 = 87,431.59/x
  3. Step 3: Cross multiply
    159,051.12x = 219,490.79 × 87,431.59
  4. Step 4: Simplify right side
    159,051.12x = 19,190,428,760.06
  5. Step 5: Solve for x
    x = 19,190,428,760.06/159,051.12
  6. Step 6: Final answer
    x = 120,655.73

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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.