Home / 213,279.26-319,641.34-86,772.04

Finding the Fourth Proportional to 213,279.26, 319,641.34 and 86,772.04

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Solution

The fourth proportional to 213,279.26, 319,641.34 and 86,772.04 is: 130,045.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,279.26 : 319,641.34 = 86,772.04 : x
  2. Step 2: Convert to fraction form
    213,279.26/319,641.34 = 86,772.04/x
  3. Step 3: Cross multiply
    213,279.26x = 319,641.34 × 86,772.04
  4. Step 4: Simplify right side
    213,279.26x = 27,735,931,140.13
  5. Step 5: Solve for x
    x = 27,735,931,140.13/213,279.26
  6. Step 6: Final answer
    x = 130,045.14

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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.