Home / 109,687.93-151,343.33-63,720.23

Finding the Fourth Proportional to 109,687.93, 151,343.33 and 63,720.23

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Solution

The fourth proportional to 109,687.93, 151,343.33 and 63,720.23 is: 87,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,687.93 : 151,343.33 = 63,720.23 : x
  2. Step 2: Convert to fraction form
    109,687.93/151,343.33 = 63,720.23/x
  3. Step 3: Cross multiply
    109,687.93x = 151,343.33 × 63,720.23
  4. Step 4: Simplify right side
    109,687.93x = 9,643,630,721.25
  5. Step 5: Solve for x
    x = 9,643,630,721.25/109,687.93
  6. Step 6: Final answer
    x = 87,918.80

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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.