Home / 170,872.20-256,308.30-99,721.80

Finding the Fourth Proportional to 170,872.20, 256,308.30 and 99,721.80

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Solution

The fourth proportional to 170,872.20, 256,308.30 and 99,721.80 is: 149,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,872.20 : 256,308.30 = 99,721.80 : x
  2. Step 2: Convert to fraction form
    170,872.20/256,308.30 = 99,721.80/x
  3. Step 3: Cross multiply
    170,872.20x = 256,308.30 × 99,721.80
  4. Step 4: Simplify right side
    170,872.20x = 25,559,525,030.94
  5. Step 5: Solve for x
    x = 25,559,525,030.94/170,872.20
  6. Step 6: Final answer
    x = 149,582.70

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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.