Home / 158,759.12-219,090.42-87,145.81

Finding the Fourth Proportional to 158,759.12, 219,090.42 and 87,145.81

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Solution

The fourth proportional to 158,759.12, 219,090.42 and 87,145.81 is: 120,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,759.12 : 219,090.42 = 87,145.81 : x
  2. Step 2: Convert to fraction form
    158,759.12/219,090.42 = 87,145.81/x
  3. Step 3: Cross multiply
    158,759.12x = 219,090.42 × 87,145.81
  4. Step 4: Simplify right side
    158,759.12x = 19,092,811,566.41
  5. Step 5: Solve for x
    x = 19,092,811,566.41/158,759.12
  6. Step 6: Final answer
    x = 120,262.77

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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.