Home / 109,587.18-151,189.74-80,975.82

Finding the Fourth Proportional to 109,587.18, 151,189.74 and 80,975.82

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Solution

The fourth proportional to 109,587.18, 151,189.74 and 80,975.82 is: 111,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,587.18 : 151,189.74 = 80,975.82 : x
  2. Step 2: Convert to fraction form
    109,587.18/151,189.74 = 80,975.82/x
  3. Step 3: Cross multiply
    109,587.18x = 151,189.74 × 80,975.82
  4. Step 4: Simplify right side
    109,587.18x = 12,242,713,172.09
  5. Step 5: Solve for x
    x = 12,242,713,172.09/109,587.18
  6. Step 6: Final answer
    x = 111,716.65

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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.