Home / 118,213.20-176,887.80-87,109.20

Finding the Fourth Proportional to 118,213.20, 176,887.80 and 87,109.20

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Solution

The fourth proportional to 118,213.20, 176,887.80 and 87,109.20 is: 130,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,213.20 : 176,887.80 = 87,109.20 : x
  2. Step 2: Convert to fraction form
    118,213.20/176,887.80 = 87,109.20/x
  3. Step 3: Cross multiply
    118,213.20x = 176,887.80 × 87,109.20
  4. Step 4: Simplify right side
    118,213.20x = 15,408,554,747.76
  5. Step 5: Solve for x
    x = 15,408,554,747.76/118,213.20
  6. Step 6: Final answer
    x = 130,345.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.