Home / 213,081.60-319,622.40-79,966.20

Finding the Fourth Proportional to 213,081.60, 319,622.40 and 79,966.20

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Solution

The fourth proportional to 213,081.60, 319,622.40 and 79,966.20 is: 119,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,081.60 : 319,622.40 = 79,966.20 : x
  2. Step 2: Convert to fraction form
    213,081.60/319,622.40 = 79,966.20/x
  3. Step 3: Cross multiply
    213,081.60x = 319,622.40 × 79,966.20
  4. Step 4: Simplify right side
    213,081.60x = 25,558,988,762.88
  5. Step 5: Solve for x
    x = 25,558,988,762.88/213,081.60
  6. Step 6: Final answer
    x = 119,949.30

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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.