Home / 137,003.28-205,566.48-87,070.44

Finding the Fourth Proportional to 137,003.28, 205,566.48 and 87,070.44

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Solution

The fourth proportional to 137,003.28, 205,566.48 and 87,070.44 is: 130,644.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,003.28 : 205,566.48 = 87,070.44 : x
  2. Step 2: Convert to fraction form
    137,003.28/205,566.48 = 87,070.44/x
  3. Step 3: Cross multiply
    137,003.28x = 205,566.48 × 87,070.44
  4. Step 4: Simplify right side
    137,003.28x = 17,898,763,862.85
  5. Step 5: Solve for x
    x = 17,898,763,862.85/137,003.28
  6. Step 6: Final answer
    x = 130,644.78

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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.