Home / 159,031.71-219,464.24-87,419.07

Finding the Fourth Proportional to 159,031.71, 219,464.24 and 87,419.07

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Solution

The fourth proportional to 159,031.71, 219,464.24 and 87,419.07 is: 120,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,031.71 : 219,464.24 = 87,419.07 : x
  2. Step 2: Convert to fraction form
    159,031.71/219,464.24 = 87,419.07/x
  3. Step 3: Cross multiply
    159,031.71x = 219,464.24 × 87,419.07
  4. Step 4: Simplify right side
    159,031.71x = 19,185,359,321.96
  5. Step 5: Solve for x
    x = 19,185,359,321.96/159,031.71
  6. Step 6: Final answer
    x = 120,638.58

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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.