Home / 159,019.51-219,437.62-87,399.59

Finding the Fourth Proportional to 159,019.51, 219,437.62 and 87,399.59

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Solution

The fourth proportional to 159,019.51, 219,437.62 and 87,399.59 is: 120,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,019.51 : 219,437.62 = 87,399.59 : x
  2. Step 2: Convert to fraction form
    159,019.51/219,437.62 = 87,399.59/x
  3. Step 3: Cross multiply
    159,019.51x = 219,437.62 × 87,399.59
  4. Step 4: Simplify right side
    159,019.51x = 19,178,758,018.58
  5. Step 5: Solve for x
    x = 19,178,758,018.58/159,019.51
  6. Step 6: Final answer
    x = 120,606.32

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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.