Home / 213,592.38-320,137.07-87,153.72

Finding the Fourth Proportional to 213,592.38, 320,137.07 and 87,153.72

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Solution

The fourth proportional to 213,592.38, 320,137.07 and 87,153.72 is: 130,627.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,592.38 : 320,137.07 = 87,153.72 : x
  2. Step 2: Convert to fraction form
    213,592.38/320,137.07 = 87,153.72/x
  3. Step 3: Cross multiply
    213,592.38x = 320,137.07 × 87,153.72
  4. Step 4: Simplify right side
    213,592.38x = 27,901,136,124.63
  5. Step 5: Solve for x
    x = 27,901,136,124.63/213,592.38
  6. Step 6: Final answer
    x = 130,627.96

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1.5x scale

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.