Home / 158,716.51-219,031.47-87,103.20

Finding the Fourth Proportional to 158,716.51, 219,031.47 and 87,103.20

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Solution

The fourth proportional to 158,716.51, 219,031.47 and 87,103.20 is: 120,203.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,716.51 : 219,031.47 = 87,103.20 : x
  2. Step 2: Convert to fraction form
    158,716.51/219,031.47 = 87,103.20/x
  3. Step 3: Cross multiply
    158,716.51x = 219,031.47 × 87,103.20
  4. Step 4: Simplify right side
    158,716.51x = 19,078,341,282.04
  5. Step 5: Solve for x
    x = 19,078,341,282.04/158,716.51
  6. Step 6: Final answer
    x = 120,203.88

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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.