Home / 138,598.02-191,294.94-87,578.36

Finding the Fourth Proportional to 138,598.02, 191,294.94 and 87,578.36

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Solution

The fourth proportional to 138,598.02, 191,294.94 and 87,578.36 is: 120,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,598.02 : 191,294.94 = 87,578.36 : x
  2. Step 2: Convert to fraction form
    138,598.02/191,294.94 = 87,578.36/x
  3. Step 3: Cross multiply
    138,598.02x = 191,294.94 × 87,578.36
  4. Step 4: Simplify right side
    138,598.02x = 16,753,297,121.50
  5. Step 5: Solve for x
    x = 16,753,297,121.50/138,598.02
  6. Step 6: Final answer
    x = 120,876.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.