Home / 155,103.26-214,031.36-87,116.72

Finding the Fourth Proportional to 155,103.26, 214,031.36 and 87,116.72

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Solution

The fourth proportional to 155,103.26, 214,031.36 and 87,116.72 is: 120,214.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,103.26 : 214,031.36 = 87,116.72 : x
  2. Step 2: Convert to fraction form
    155,103.26/214,031.36 = 87,116.72/x
  3. Step 3: Cross multiply
    155,103.26x = 214,031.36 × 87,116.72
  4. Step 4: Simplify right side
    155,103.26x = 18,645,709,207.97
  5. Step 5: Solve for x
    x = 18,645,709,207.97/155,103.26
  6. Step 6: Final answer
    x = 120,214.82

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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.