Home / 213,179.46-319,581-86,925.30

Finding the Fourth Proportional to 213,179.46, 319,581 and 86,925.30

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Solution

The fourth proportional to 213,179.46, 319,581 and 86,925.30 is: 130,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,179.46 : 319,581 = 86,925.30 : x
  2. Step 2: Convert to fraction form
    213,179.46/319,581 = 86,925.30/x
  3. Step 3: Cross multiply
    213,179.46x = 319,581 × 86,925.30
  4. Step 4: Simplify right side
    213,179.46x = 27,779,674,299.30
  5. Step 5: Solve for x
    x = 27,779,674,299.30/213,179.46
  6. Step 6: Final answer
    x = 130,311.21

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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.