Home / 213,166.89-319,562.18-86,912.75

Finding the Fourth Proportional to 213,166.89, 319,562.18 and 86,912.75

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Solution

The fourth proportional to 213,166.89, 319,562.18 and 86,912.75 is: 130,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,166.89 : 319,562.18 = 86,912.75 : x
  2. Step 2: Convert to fraction form
    213,166.89/319,562.18 = 86,912.75/x
  3. Step 3: Cross multiply
    213,166.89x = 319,562.18 × 86,912.75
  4. Step 4: Simplify right side
    213,166.89x = 27,774,026,752.52
  5. Step 5: Solve for x
    x = 27,774,026,752.52/213,166.89
  6. Step 6: Final answer
    x = 130,292.40

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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.