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Finding the Fourth Proportional to 170,844.80, 255,878.40 and 87,641.60

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Solution

The fourth proportional to 170,844.80, 255,878.40 and 87,641.60 is: 131,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,844.80 : 255,878.40 = 87,641.60 : x
  2. Step 2: Convert to fraction form
    170,844.80/255,878.40 = 87,641.60/x
  3. Step 3: Cross multiply
    170,844.80x = 255,878.40 × 87,641.60
  4. Step 4: Simplify right side
    170,844.80x = 22,425,592,381.44
  5. Step 5: Solve for x
    x = 22,425,592,381.44/170,844.80
  6. Step 6: Final answer
    x = 131,262.95

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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.