Home / 114,737.20-172,105.80-86,743.60

Finding the Fourth Proportional to 114,737.20, 172,105.80 and 86,743.60

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Solution

The fourth proportional to 114,737.20, 172,105.80 and 86,743.60 is: 130,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,737.20 : 172,105.80 = 86,743.60 : x
  2. Step 2: Convert to fraction form
    114,737.20/172,105.80 = 86,743.60/x
  3. Step 3: Cross multiply
    114,737.20x = 172,105.80 × 86,743.60
  4. Step 4: Simplify right side
    114,737.20x = 14,929,076,672.88
  5. Step 5: Solve for x
    x = 14,929,076,672.88/114,737.20
  6. Step 6: Final answer
    x = 130,115.40

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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.