Home / 109,939.91-151,720.80-64,617.25

Finding the Fourth Proportional to 109,939.91, 151,720.80 and 64,617.25

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Solution

The fourth proportional to 109,939.91, 151,720.80 and 64,617.25 is: 89,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,939.91 : 151,720.80 = 64,617.25 : x
  2. Step 2: Convert to fraction form
    109,939.91/151,720.80 = 64,617.25/x
  3. Step 3: Cross multiply
    109,939.91x = 151,720.80 × 64,617.25
  4. Step 4: Simplify right side
    109,939.91x = 9,803,780,863.80
  5. Step 5: Solve for x
    x = 9,803,780,863.80/109,939.91
  6. Step 6: Final answer
    x = 89,173.99

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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.