Home / 109,158.98-150,589.56-78,896.36

Finding the Fourth Proportional to 109,158.98, 150,589.56 and 78,896.36

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Solution

The fourth proportional to 109,158.98, 150,589.56 and 78,896.36 is: 108,840.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,158.98 : 150,589.56 = 78,896.36 : x
  2. Step 2: Convert to fraction form
    109,158.98/150,589.56 = 78,896.36/x
  3. Step 3: Cross multiply
    109,158.98x = 150,589.56 × 78,896.36
  4. Step 4: Simplify right side
    109,158.98x = 11,880,968,810.34
  5. Step 5: Solve for x
    x = 11,880,968,810.34/109,158.98
  6. Step 6: Final answer
    x = 108,840.97

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1.5x scale

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.