Home / 213,120.18-319,680.27-72,880.02

Finding the Fourth Proportional to 213,120.18, 319,680.27 and 72,880.02

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Solution

The fourth proportional to 213,120.18, 319,680.27 and 72,880.02 is: 109,320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,120.18 : 319,680.27 = 72,880.02 : x
  2. Step 2: Convert to fraction form
    213,120.18/319,680.27 = 72,880.02/x
  3. Step 3: Cross multiply
    213,120.18x = 319,680.27 × 72,880.02
  4. Step 4: Simplify right side
    213,120.18x = 23,298,304,471.21
  5. Step 5: Solve for x
    x = 23,298,304,471.21/213,120.18
  6. Step 6: Final answer
    x = 109,320.03

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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.