Home / 109,439.90-151,029.39-61,693.24

Finding the Fourth Proportional to 109,439.90, 151,029.39 and 61,693.24

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Solution

The fourth proportional to 109,439.90, 151,029.39 and 61,693.24 is: 85,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,439.90 : 151,029.39 = 61,693.24 : x
  2. Step 2: Convert to fraction form
    109,439.90/151,029.39 = 61,693.24/x
  3. Step 3: Cross multiply
    109,439.90x = 151,029.39 × 61,693.24
  4. Step 4: Simplify right side
    109,439.90x = 9,317,491,649.18
  5. Step 5: Solve for x
    x = 9,317,491,649.18/109,439.90
  6. Step 6: Final answer
    x = 85,137.98

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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.