Home / 213,280.10-320,030.55-87,012.90

Finding the Fourth Proportional to 213,280.10, 320,030.55 and 87,012.90

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Solution

The fourth proportional to 213,280.10, 320,030.55 and 87,012.90 is: 130,564.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,280.10 : 320,030.55 = 87,012.90 : x
  2. Step 2: Convert to fraction form
    213,280.10/320,030.55 = 87,012.90/x
  3. Step 3: Cross multiply
    213,280.10x = 320,030.55 × 87,012.90
  4. Step 4: Simplify right side
    213,280.10x = 27,846,786,244.10
  5. Step 5: Solve for x
    x = 27,846,786,244.10/213,280.10
  6. Step 6: Final answer
    x = 130,564.39

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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.